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aba5acdf
SH		 1/*
2 * iproute.c "ip route".
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
8 *
9 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
10 *
aba5acdf
SH		 11 */
12
13#include <stdio.h>
14#include <stdlib.h>
15#include <unistd.h>
aba5acdf
SH		 16#include <fcntl.h>
17#include <string.h>
33551240 18#include <time.h>
aba5acdf
SH		 19#include <sys/time.h>
20#include <sys/socket.h>
21#include <netinet/in.h>
22#include <netinet/ip.h>
23#include <arpa/inet.h>
24#include <linux/in_route.h>
194e9b85 25#include <linux/icmpv6.h>
f4ff11e3 26#include <errno.h>
aba5acdf
SH		 27
28#include "rt_names.h"
29#include "utils.h"
30#include "ip_common.h"
31
32#ifndef RTAX_RTTVAR
33#define RTAX_RTTVAR RTAX_HOPS
34#endif
35
f4ff11e3
DS		 36enum list_action {
37 IPROUTE_LIST,
38 IPROUTE_FLUSH,
39 IPROUTE_SAVE,
40};
f38c7334 41static const char *mx_names[RTAX_MAX+1] = {
e54ed380
CP		 42 [RTAX_MTU] = "mtu",
43 [RTAX_WINDOW] = "window",
44 [RTAX_RTT] = "rtt",
45 [RTAX_RTTVAR] = "rttvar",
46 [RTAX_SSTHRESH] = "ssthresh",
47 [RTAX_CWND] = "cwnd",
48 [RTAX_ADVMSS] = "advmss",
49 [RTAX_REORDERING] = "reordering",
50 [RTAX_HOPLIMIT] = "hoplimit",
51 [RTAX_INITCWND] = "initcwnd",
52 [RTAX_FEATURES] = "features",
53 [RTAX_RTO_MIN] = "rto_min",
54 [RTAX_INITRWND] = "initrwnd",
55 [RTAX_QUICKACK] = "quickack",
56 [RTAX_CC_ALGO] = "congctl",
57 [RTAX_FASTOPEN_NO_COOKIE] = "fastopen_no_cookie"
f38c7334 58};
aba5acdf
SH		 59static void usage(void) __attribute__((noreturn));
60
61static void usage(void)
62{
21fef525
SH		 63 fprintf(stderr,
64 "Usage: ip route { list | flush } SELECTOR\n"
65 " ip route save SELECTOR\n"
66 " ip route restore\n"
67 " ip route showdump\n"
68 " ip route get [ ROUTE_GET_FLAGS ] ADDRESS\n"
69 " [ from ADDRESS iif STRING ]\n"
70 " [ oif STRING ] [ tos TOS ]\n"
71 " [ mark NUMBER ] [ vrf NAME ]\n"
804c7fff
RP		 72 " [ uid NUMBER ] [ ipproto PROTOCOL ]\n"
73 " [ sport NUMBER ] [ dport NUMBER ]\n"
21fef525
SH		 74 " ip route { add | del | change | append | replace } ROUTE\n"
75 "SELECTOR := [ root PREFIX ] [ match PREFIX ] [ exact PREFIX ]\n"
76 " [ table TABLE_ID ] [ vrf NAME ] [ proto RTPROTO ]\n"
77 " [ type TYPE ] [ scope SCOPE ]\n"
78 "ROUTE := NODE_SPEC [ INFO_SPEC ]\n"
79 "NODE_SPEC := [ TYPE ] PREFIX [ tos TOS ]\n"
80 " [ table TABLE_ID ] [ proto RTPROTO ]\n"
81 " [ scope SCOPE ] [ metric METRIC ]\n"
82 " [ ttl-propagate { enabled | disabled } ]\n"
12387e2c 83 "INFO_SPEC := { NH | nhid ID } OPTIONS FLAGS [ nexthop NH ]...\n"
21fef525
SH		 84 "NH := [ encap ENCAPTYPE ENCAPHDR ] [ via [ FAMILY ] ADDRESS ]\n"
85 " [ dev STRING ] [ weight NUMBER ] NHFLAGS\n"
738aebe5 86 "FAMILY := [ inet | inet6 | mpls | bridge | link ]\n"
21fef525
SH		 87 "OPTIONS := FLAGS [ mtu NUMBER ] [ advmss NUMBER ] [ as [ to ] ADDRESS ]\n"
88 " [ rtt TIME ] [ rttvar TIME ] [ reordering NUMBER ]\n"
89 " [ window NUMBER ] [ cwnd NUMBER ] [ initcwnd NUMBER ]\n"
90 " [ ssthresh NUMBER ] [ realms REALM ] [ src ADDRESS ]\n"
91 " [ rto_min TIME ] [ hoplimit NUMBER ] [ initrwnd NUMBER ]\n"
92 " [ features FEATURES ] [ quickack BOOL ] [ congctl NAME ]\n"
e54ed380 93 " [ pref PREF ] [ expires TIME ] [ fastopen_no_cookie BOOL ]\n"
21fef525
SH		 94 "TYPE := { unicast | local | broadcast | multicast | throw |\n"
95 " unreachable | prohibit | blackhole | nat }\n"
96 "TABLE_ID := [ local | main | default | all | NUMBER ]\n"
97 "SCOPE := [ host | link | global | NUMBER ]\n"
98 "NHFLAGS := [ onlink | pervasive ]\n"
99 "RTPROTO := [ kernel | boot | static | NUMBER ]\n"
100 "PREF := [ low | medium | high ]\n"
101 "TIME := NUMBER[s|ms]\n"
102 "BOOL := [1|0]\n"
103 "FEATURES := ecn\n"
9f91f1b7 104 "ENCAPTYPE := [ mpls | ip | ip6 | seg6 | seg6local | rpl ]\n"
21fef525
SH		 105 "ENCAPHDR := [ MPLSLABEL | SEG6HDR ]\n"
106 "SEG6HDR := [ mode SEGMODE ] segs ADDR1,ADDRi,ADDRn [hmac HMACKEYID] [cleanup]\n"
107 "SEGMODE := [ encap | inline ]\n"
108 "ROUTE_GET_FLAGS := [ fibmatch ]\n");
aba5acdf
SH		 109 exit(-1);
110}
111
112
113static struct
114{
caae16b3 115 unsigned int tb;
bd4bcdad 116 int cloned;
aba5acdf
SH		 117 int flushed;
118 char *flushb;
119 int flushp;
120 int flushe;
aba5acdf
SH		 121 int protocol, protocolmask;
122 int scope, scopemask;
d84b1878 123 __u64 typemask;
aba5acdf
SH		 124 int tos, tosmask;
125 int iif, iifmask;
126 int oif, oifmask;
b0373bfb 127 int mark, markmask;
aba5acdf 128 int realm, realmmask;
ed7fdc95 129 __u32 metric, metricmask;
aba5acdf
SH		 130 inet_prefix rprefsrc;
131 inet_prefix rvia;
132 inet_prefix rdst;
133 inet_prefix mdst;
134 inet_prefix rsrc;
135 inet_prefix msrc;
136} filter;
137
138static int flush_update(void)
139{
f31a37f7 140 if (rtnl_send_check(&rth, filter.flushb, filter.flushp) < 0) {
1fb0a998 141 perror("Failed to send flush request");
2f406f2d 142 return -2;
aba5acdf
SH		 143 }
144 filter.flushp = 0;
145 return 0;
146}
147
d1f28cf1 148static int filter_nlmsg(struct nlmsghdr *n, struct rtattr **tb, int host_len)
aba5acdf 149{
aba5acdf 150 struct rtmsg *r = NLMSG_DATA(n);
d17b136f
PS		 151 inet_prefix dst = { .family = r->rtm_family };
152 inet_prefix src = { .family = r->rtm_family };
153 inet_prefix via = { .family = r->rtm_family };
154 inet_prefix prefsrc = { .family = r->rtm_family };
34e95647 155 __u32 table;
f4ff11e3 156 static int ip6_multiple_tables;
aba5acdf 157
34e95647
PM		 158 table = rtm_get_table(r, tb);
159
5b9ac190
AV		 160 if (preferred_family != AF_UNSPEC && r->rtm_family != preferred_family)
161 return 0;
162
34e95647 163 if (r->rtm_family == AF_INET6 && table != RT_TABLE_MAIN)
e0b29fe7
PM		 164 ip6_multiple_tables = 1;
165
80d1c528 166 if (filter.cloned == !(r->rtm_flags & RTM_F_CLONED))
44792827
UW		 167 return 0;
168
e0b29fe7 169 if (r->rtm_family == AF_INET6 && !ip6_multiple_tables) {
aba5acdf 170 if (filter.tb) {
bd4bcdad
PM		 171 if (filter.tb == RT_TABLE_LOCAL) {
172 if (r->rtm_type != RTN_LOCAL)
aba5acdf 173 return 0;
bd4bcdad
PM		 174 } else if (filter.tb == RT_TABLE_MAIN) {
175 if (r->rtm_type == RTN_LOCAL)
aba5acdf 176 return 0;
bd4bcdad
PM		 177 } else {
178 return 0;
aba5acdf
SH		 179 }
180 }
181 } else {
34e95647 182 if (filter.tb > 0 && filter.tb != table)
aba5acdf
SH		 183 return 0;
184 }
185 if ((filter.protocol^r->rtm_protocol)&filter.protocolmask)
186 return 0;
187 if ((filter.scope^r->rtm_scope)&filter.scopemask)
188 return 0;
d84b1878
DA		 189
190 if (filter.typemask && !(filter.typemask & (1 << r->rtm_type)))
aba5acdf
SH		 191 return 0;
192 if ((filter.tos^r->rtm_tos)&filter.tosmask)
193 return 0;
c1218072
AZ		 194 if (filter.rdst.family) {
195 if (r->rtm_family != filter.rdst.family ||
196 filter.rdst.bitlen > r->rtm_dst_len)
197 return 0;
198 } else if (filter.rdst.flags & PREFIXLEN_SPECIFIED) {
199 if (filter.rdst.bitlen > r->rtm_dst_len)
200 return 0;
201 }
202 if (filter.mdst.family) {
203 if (r->rtm_family != filter.mdst.family ||
204 (filter.mdst.bitlen >= 0 &&
205 filter.mdst.bitlen < r->rtm_dst_len))
206 return 0;
207 } else if (filter.mdst.flags & PREFIXLEN_SPECIFIED) {
208 if (filter.mdst.bitlen >= 0 &&
209 filter.mdst.bitlen < r->rtm_dst_len)
210 return 0;
211 }
212 if (filter.rsrc.family) {
213 if (r->rtm_family != filter.rsrc.family ||
214 filter.rsrc.bitlen > r->rtm_src_len)
215 return 0;
216 } else if (filter.rsrc.flags & PREFIXLEN_SPECIFIED) {
217 if (filter.rsrc.bitlen > r->rtm_src_len)
218 return 0;
219 }
220 if (filter.msrc.family) {
221 if (r->rtm_family != filter.msrc.family ||
222 (filter.msrc.bitlen >= 0 &&
223 filter.msrc.bitlen < r->rtm_src_len))
224 return 0;
225 } else if (filter.msrc.flags & PREFIXLEN_SPECIFIED) {
226 if (filter.msrc.bitlen >= 0 &&
227 filter.msrc.bitlen < r->rtm_src_len)
228 return 0;
229 }
93ae2835
EB		 230 if (filter.rvia.family) {
231 int family = r->rtm_family;
56f5daac 232
93ae2835
EB		 233 if (tb[RTA_VIA]) {
234 struct rtvia *via = RTA_DATA(tb[RTA_VIA]);
56f5daac 235
93ae2835
EB		 236 family = via->rtvia_family;
237 }
238 if (family != filter.rvia.family)
239 return 0;
240 }
aba5acdf
SH		 241 if (filter.rprefsrc.family && r->rtm_family != filter.rprefsrc.family)
242 return 0;
243
aba5acdf
SH		 244 if (tb[RTA_DST])
245 memcpy(&dst.data, RTA_DATA(tb[RTA_DST]), (r->rtm_dst_len+7)/8);
c1218072
AZ		 246 if (filter.rsrc.family || filter.msrc.family ||
247 filter.rsrc.flags & PREFIXLEN_SPECIFIED ||
248 filter.msrc.flags & PREFIXLEN_SPECIFIED) {
aba5acdf
SH		 249 if (tb[RTA_SRC])
250 memcpy(&src.data, RTA_DATA(tb[RTA_SRC]), (r->rtm_src_len+7)/8);
251 }
56f5daac 252 if (filter.rvia.bitlen > 0) {
aba5acdf 253 if (tb[RTA_GATEWAY])
7849fb55 254 memcpy(&via.data, RTA_DATA(tb[RTA_GATEWAY]), host_len/8);
93ae2835
EB		 255 if (tb[RTA_VIA]) {
256 size_t len = RTA_PAYLOAD(tb[RTA_VIA]) - 2;
257 struct rtvia *rtvia = RTA_DATA(tb[RTA_VIA]);
56f5daac 258
93ae2835
EB		 259 via.family = rtvia->rtvia_family;
260 memcpy(&via.data, rtvia->rtvia_addr, len);
261 }
aba5acdf 262 }
56f5daac 263 if (filter.rprefsrc.bitlen > 0) {
aba5acdf 264 if (tb[RTA_PREFSRC])
7849fb55 265 memcpy(&prefsrc.data, RTA_DATA(tb[RTA_PREFSRC]), host_len/8);
aba5acdf
SH		 266 }
267
c1218072
AZ		 268 if ((filter.rdst.family || filter.rdst.flags & PREFIXLEN_SPECIFIED) &&
269 inet_addr_match(&dst, &filter.rdst, filter.rdst.bitlen))
aba5acdf 270 return 0;
c1218072 271 if ((filter.mdst.family || filter.mdst.flags & PREFIXLEN_SPECIFIED) &&
aba5acdf
SH		 272 inet_addr_match(&dst, &filter.mdst, r->rtm_dst_len))
273 return 0;
274
c1218072
AZ		 275 if ((filter.rsrc.family || filter.rsrc.flags & PREFIXLEN_SPECIFIED) &&
276 inet_addr_match(&src, &filter.rsrc, filter.rsrc.bitlen))
aba5acdf 277 return 0;
c1218072
AZ		 278 if ((filter.msrc.family || filter.msrc.flags & PREFIXLEN_SPECIFIED) &&
279 filter.msrc.bitlen >= 0 &&
aba5acdf
SH		 280 inet_addr_match(&src, &filter.msrc, r->rtm_src_len))
281 return 0;
282
283 if (filter.rvia.family && inet_addr_match(&via, &filter.rvia, filter.rvia.bitlen))
284 return 0;
285 if (filter.rprefsrc.family && inet_addr_match(&prefsrc, &filter.rprefsrc, filter.rprefsrc.bitlen))
286 return 0;
287 if (filter.realmmask) {
288 __u32 realms = 0;
56f5daac 289
aba5acdf 290 if (tb[RTA_FLOW])
ff24746c 291 realms = rta_getattr_u32(tb[RTA_FLOW]);
aba5acdf
SH		 292 if ((realms^filter.realm)&filter.realmmask)
293 return 0;
294 }
295 if (filter.iifmask) {
296 int iif = 0;
56f5daac 297
aba5acdf 298 if (tb[RTA_IIF])
9f1370c0 299 iif = rta_getattr_u32(tb[RTA_IIF]);
aba5acdf
SH		 300 if ((iif^filter.iif)&filter.iifmask)
301 return 0;
302 }
303 if (filter.oifmask) {
304 int oif = 0;
56f5daac 305
aba5acdf 306 if (tb[RTA_OIF])
9f1370c0 307 oif = rta_getattr_u32(tb[RTA_OIF]);
aba5acdf
SH		 308 if ((oif^filter.oif)&filter.oifmask)
309 return 0;
310 }
b0373bfb
ED		 311 if (filter.markmask) {
312 int mark = 0;
56f5daac 313
b0373bfb 314 if (tb[RTA_MARK])
9f1370c0 315 mark = rta_getattr_u32(tb[RTA_MARK]);
b0373bfb
ED		 316 if ((mark ^ filter.mark) & filter.markmask)
317 return 0;
318 }
ed7fdc95
AZ		 319 if (filter.metricmask) {
320 __u32 metric = 0;
321
322 if (tb[RTA_PRIORITY])
323 metric = rta_getattr_u32(tb[RTA_PRIORITY]);
324 if ((metric ^ filter.metric) & filter.metricmask)
325 return 0;
326 }
ae665a52 327 if (filter.flushb &&
aba5acdf
SH		 328 r->rtm_family == AF_INET6 &&
329 r->rtm_dst_len == 0 &&
330 r->rtm_type == RTN_UNREACHABLE &&
331 tb[RTA_PRIORITY] &&
9f1370c0 332 rta_getattr_u32(tb[RTA_PRIORITY]) == -1)
aba5acdf
SH		 333 return 0;
334
f4ff11e3
DS		 335 return 1;
336}
337
29d1f730
FW		 338static void print_rtax_features(FILE *fp, unsigned int features)
339{
340 unsigned int of = features;
341
342 if (features & RTAX_FEATURE_ECN) {
663c3cb2 343 print_null(PRINT_ANY, "ecn", "ecn ", NULL);
29d1f730
FW		 344 features &= ~RTAX_FEATURE_ECN;
345 }
346
347 if (features)
663c3cb2 348 print_0xhex(PRINT_ANY,
90c5c969 349 "features", "%#llx ", of);
29d1f730
FW		 350}
351
48a1e96d 352void print_rt_flags(FILE *fp, unsigned int flags)
b3ab1e68 353{
663c3cb2
SH		 354 open_json_array(PRINT_JSON,
355 is_json_context() ? "flags" : "");
356
b3ab1e68 357 if (flags & RTNH_F_DEAD)
663c3cb2 358 print_string(PRINT_ANY, NULL, "%s ", "dead");
b3ab1e68 359 if (flags & RTNH_F_ONLINK)
663c3cb2 360 print_string(PRINT_ANY, NULL, "%s ", "onlink");
b3ab1e68 361 if (flags & RTNH_F_PERVASIVE)
663c3cb2 362 print_string(PRINT_ANY, NULL, "%s ", "pervasive");
b3ab1e68 363 if (flags & RTNH_F_OFFLOAD)
663c3cb2 364 print_string(PRINT_ANY, NULL, "%s ", "offload");
3de35f41
IS		 365 if (flags & RTNH_F_TRAP)
366 print_string(PRINT_ANY, NULL, "%s ", "trap");
663c3cb2
SH		 367 if (flags & RTM_F_NOTIFY)
368 print_string(PRINT_ANY, NULL, "%s ", "notify");
b3ab1e68 369 if (flags & RTNH_F_LINKDOWN)
663c3cb2 370 print_string(PRINT_ANY, NULL, "%s ", "linkdown");
b3ab1e68 371 if (flags & RTNH_F_UNRESOLVED)
663c3cb2 372 print_string(PRINT_ANY, NULL, "%s ", "unresolved");
ed81a2a0
IS		 373 if (flags & RTM_F_OFFLOAD)
374 print_string(PRINT_ANY, NULL, "%s ", "rt_offload");
375 if (flags & RTM_F_TRAP)
376 print_string(PRINT_ANY, NULL, "%s ", "rt_trap");
663c3cb2
SH		 377
378 close_json_array(PRINT_JSON, NULL);
b3ab1e68
SH		 379}
380
8cfc2d47
SH		 381static void print_rt_pref(FILE *fp, unsigned int pref)
382{
8cfc2d47
SH		 383
384 switch (pref) {
385 case ICMPV6_ROUTER_PREF_LOW:
663c3cb2
SH		 386 print_string(PRINT_ANY,
387 "pref", "pref %s", "low");
8cfc2d47
SH		 388 break;
389 case ICMPV6_ROUTER_PREF_MEDIUM:
663c3cb2
SH		 390 print_string(PRINT_ANY,
391 "pref", "pref %s", "medium");
8cfc2d47
SH		 392 break;
393 case ICMPV6_ROUTER_PREF_HIGH:
663c3cb2
SH		 394 print_string(PRINT_ANY,
395 "pref", "pref %s", "high");
8cfc2d47
SH		 396 break;
397 default:
663c3cb2
SH		 398 print_uint(PRINT_ANY,
399 "pref", "%u", pref);
8cfc2d47
SH		 400 }
401}
402
48a1e96d 403void print_rta_if(FILE *fp, const struct rtattr *rta, const char *prefix)
1506d8d3
SH		 404{
405 const char *ifname = ll_index_to_name(rta_getattr_u32(rta));
406
663c3cb2
SH		 407 if (is_json_context())
408 print_string(PRINT_JSON, prefix, NULL, ifname);
409 else {
410 fprintf(fp, "%s ", prefix);
411 color_fprintf(fp, COLOR_IFNAME, "%s ", ifname);
412 }
1506d8d3
SH		 413}
414
daf30f6f
SH		 415static void print_cache_flags(FILE *fp, __u32 flags)
416{
663c3cb2 417 json_writer_t *jw = get_json_writer();
daf30f6f
SH		 418 flags &= ~0xFFFF;
419
663c3cb2
SH		 420 if (jw) {
421 jsonw_name(jw, "cache");
422 jsonw_start_array(jw);
423 } else {
424 fprintf(fp, "%s cache ", _SL_);
425 if (flags == 0)
426 return;
427 putc('<', fp);
428 }
daf30f6f
SH		 429
430#define PRTFL(fl, flname) \
431 if (flags & RTCF_##fl) { \
432 flags &= ~RTCF_##fl; \
663c3cb2
SH		 433 if (jw) \
434 jsonw_string(jw, flname); \
435 else \
436 fprintf(fp, "%s%s", flname, flags ? "," : "> "); \
daf30f6f
SH		 437 }
438
439 PRTFL(LOCAL, "local");
440 PRTFL(REJECT, "reject");
441 PRTFL(MULTICAST, "mc");
442 PRTFL(BROADCAST, "brd");
443 PRTFL(DNAT, "dst-nat");
444 PRTFL(SNAT, "src-nat");
445 PRTFL(MASQ, "masq");
446 PRTFL(DIRECTDST, "dst-direct");
447 PRTFL(DIRECTSRC, "src-direct");
448 PRTFL(REDIRECTED, "redirected");
449 PRTFL(DOREDIRECT, "redirect");
450 PRTFL(FAST, "fastroute");
451 PRTFL(NOTIFY, "notify");
452 PRTFL(TPROXY, "proxy");
453#undef PRTFL
454
455 if (flags)
663c3cb2
SH		 456 print_hex(PRINT_ANY, "flags", "%x>", flags);
457
a0a639d9 458 if (jw)
663c3cb2 459 jsonw_end_array(jw);
daf30f6f
SH		 460}
461
6e41810e
SH		 462static void print_rta_cacheinfo(FILE *fp, const struct rta_cacheinfo *ci)
463{
464 static int hz;
465
466 if (!hz)
467 hz = get_user_hz();
663c3cb2 468
6e41810e 469 if (ci->rta_expires != 0)
39d16a02
DA		 470 print_int(PRINT_ANY, "expires",
471 "expires %dsec ", ci->rta_expires/hz);
6e41810e 472 if (ci->rta_error != 0)
663c3cb2
SH		 473 print_uint(PRINT_ANY, "error",
474 "error %u ", ci->rta_error);
475
6e41810e
SH		 476 if (show_stats) {
477 if (ci->rta_clntref)
663c3cb2
SH		 478 print_uint(PRINT_ANY, "users",
479 "users %u ", ci->rta_clntref);
6e41810e 480 if (ci->rta_used != 0)
663c3cb2
SH		 481 print_uint(PRINT_ANY, "used",
482 "used %u ", ci->rta_used);
6e41810e 483 if (ci->rta_lastuse != 0)
663c3cb2
SH		 484 print_uint(PRINT_ANY, "age",
485 "age %usec ", ci->rta_lastuse/hz);
6e41810e
SH		 486 }
487 if (ci->rta_id)
663c3cb2 488 print_0xhex(PRINT_ANY, "ipid",
90c5c969 489 "ipid 0x%04llx ", ci->rta_id);
663c3cb2
SH		 490 if (ci->rta_ts || ci->rta_tsage) {
491 print_0xhex(PRINT_ANY, "ts",
90c5c969 492 "ts 0x%llx", ci->rta_ts);
663c3cb2
SH		 493 print_uint(PRINT_ANY, "tsage",
494 "tsage %usec ", ci->rta_tsage);
495 }
6e41810e
SH		 496}
497
5782965a
SH		 498static void print_rta_flow(FILE *fp, const struct rtattr *rta)
499{
500 __u32 to = rta_getattr_u32(rta);
501 __u32 from = to >> 16;
502 SPRINT_BUF(b1);
503
504 to &= 0xFFFF;
663c3cb2
SH		 505 if (is_json_context()) {
506 open_json_object("flow");
507
508 if (from)
509 print_string(PRINT_JSON, "from", NULL,
510 rtnl_rtrealm_n2a(from, b1, sizeof(b1)));
511 print_string(PRINT_JSON, "to", NULL,
512 rtnl_rtrealm_n2a(to, b1, sizeof(b1)));
513 close_json_object();
514 } else {
515 fprintf(fp, "realm%s ", from ? "s" : "");
516
517 if (from)
518 print_string(PRINT_FP, NULL, "%s/",
519 rtnl_rtrealm_n2a(from, b1, sizeof(b1)));
520 print_string(PRINT_FP, NULL, "%s ",
521 rtnl_rtrealm_n2a(to, b1, sizeof(b1)));
5782965a 522 }
5782965a
SH		 523}
524
a3484a9f
SH		 525static void print_rta_newdst(FILE *fp, const struct rtmsg *r,
526 const struct rtattr *rta)
527{
528 const char *newdst = format_host_rta(r->rtm_family, rta);
529
663c3cb2
SH		 530 if (is_json_context())
531 print_string(PRINT_JSON, "to", NULL, newdst);
532 else {
533 fprintf(fp, "as to ");
534 print_color_string(PRINT_FP,
535 ifa_family_color(r->rtm_family),
536 NULL, "%s ", newdst);
537 }
a3484a9f
SH		 538}
539
48a1e96d 540void print_rta_gateway(FILE *fp, unsigned char family, const struct rtattr *rta)
a3484a9f 541{
48a1e96d 542 const char *gateway = format_host_rta(family, rta);
a3484a9f 543
663c3cb2
SH		 544 if (is_json_context())
545 print_string(PRINT_JSON, "gateway", NULL, gateway);
546 else {
547 fprintf(fp, "via ");
548 print_color_string(PRINT_FP,
48a1e96d 549 ifa_family_color(family),
663c3cb2
SH		 550 NULL, "%s ", gateway);
551 }
a3484a9f
SH		 552}
553
554static void print_rta_via(FILE *fp, const struct rtattr *rta)
555{
663c3cb2 556 size_t len = RTA_PAYLOAD(rta) - 2;
a3484a9f 557 const struct rtvia *via = RTA_DATA(rta);
a3484a9f 558
663c3cb2
SH		 559 if (is_json_context()) {
560 open_json_object("via");
561 print_string(PRINT_JSON, "family", NULL,
562 family_name(via->rtvia_family));
563 print_string(PRINT_JSON, "host", NULL,
564 format_host(via->rtvia_family, len,
565 via->rtvia_addr));
566 close_json_object();
567 } else {
568 print_string(PRINT_FP, NULL, "via %s ",
569 family_name(via->rtvia_family));
570 print_color_string(PRINT_FP,
571 ifa_family_color(via->rtvia_family),
572 NULL, "%s ",
573 format_host(via->rtvia_family,
574 len, via->rtvia_addr));
575 }
a3484a9f
SH		 576}
577
968272e7
SH		 578static void print_rta_metrics(FILE *fp, const struct rtattr *rta)
579{
580 struct rtattr *mxrta[RTAX_MAX+1];
581 unsigned int mxlock = 0;
582 int i;
583
663c3cb2 584 open_json_array(PRINT_JSON, "metrics");
89ce8012 585 open_json_object(NULL);
663c3cb2 586
968272e7
SH		 587 parse_rtattr(mxrta, RTAX_MAX, RTA_DATA(rta), RTA_PAYLOAD(rta));
588
589 if (mxrta[RTAX_LOCK])
590 mxlock = rta_getattr_u32(mxrta[RTAX_LOCK]);
591
592 for (i = 2; i <= RTAX_MAX; i++) {
593 __u32 val = 0U;
594
595 if (mxrta[i] == NULL && !(mxlock & (1 << i)))
596 continue;
597
598 if (mxrta[i] != NULL && i != RTAX_CC_ALGO)
599 val = rta_getattr_u32(mxrta[i]);
600
601 if (i == RTAX_HOPLIMIT && (int)val == -1)
602 continue;
603
663c3cb2
SH		 604 if (!is_json_context()) {
605 if (i < sizeof(mx_names)/sizeof(char *) && mx_names[i])
606 fprintf(fp, "%s ", mx_names[i]);
607 else
608 fprintf(fp, "metric %d ", i);
968272e7 609
663c3cb2
SH		 610 if (mxlock & (1<<i))
611 fprintf(fp, "lock ");
612 }
968272e7
SH		 613
614 switch (i) {
615 case RTAX_FEATURES:
616 print_rtax_features(fp, val);
617 break;
618 default:
89ce8012 619 print_uint(PRINT_ANY, mx_names[i], "%u ", val);
968272e7
SH		 620 break;
621
622 case RTAX_RTT:
623 case RTAX_RTTVAR:
624 case RTAX_RTO_MIN:
625 if (i == RTAX_RTT)
626 val /= 8;
627 else if (i == RTAX_RTTVAR)
628 val /= 4;
629
663c3cb2
SH		 630 if (is_json_context())
631 print_uint(PRINT_JSON, mx_names[i],
632 NULL, val);
633 else {
634 if (val >= 1000)
635 fprintf(fp, "%gs ", val/1e3);
636 else
637 fprintf(fp, "%ums ", val);
638 }
968272e7
SH		 639 break;
640 case RTAX_CC_ALGO:
663c3cb2
SH		 641 print_string(PRINT_ANY, "congestion",
642 "%s ", rta_getattr_str(mxrta[i]));
968272e7
SH		 643 break;
644 }
645 }
663c3cb2 646
89ce8012 647 close_json_object();
663c3cb2 648 close_json_array(PRINT_JSON, NULL);
968272e7
SH		 649}
650
f48e1488
SH		 651static void print_rta_multipath(FILE *fp, const struct rtmsg *r,
652 struct rtattr *rta)
653{
654 const struct rtnexthop *nh = RTA_DATA(rta);
655 int len = RTA_PAYLOAD(rta);
656 int first = 1;
657
4ecefff3
JF		 658 open_json_array(PRINT_JSON, "nexthops");
659
c0ec7c9f 660 while (len >= sizeof(*nh)) {
f48e1488
SH		 661 struct rtattr *tb[RTA_MAX + 1];
662
663 if (nh->rtnh_len > len)
664 break;
665
4ecefff3
JF		 666 open_json_object(NULL);
667
668 if ((r->rtm_flags & RTM_F_CLONED) &&
669 r->rtm_type == RTN_MULTICAST) {
670 if (first) {
671 print_string(PRINT_FP, NULL, "Oifs: ", NULL);
672 first = 0;
673 } else {
674 print_string(PRINT_FP, NULL, " ", NULL);
675 }
676 } else
677 print_string(PRINT_FP, NULL, "%s\tnexthop ", _SL_);
f48e1488
SH		 678
679 if (nh->rtnh_len > sizeof(*nh)) {
680 parse_rtattr(tb, RTA_MAX, RTNH_DATA(nh),
681 nh->rtnh_len - sizeof(*nh));
682
683 if (tb[RTA_ENCAP])
684 lwt_print_encap(fp,
685 tb[RTA_ENCAP_TYPE],
686 tb[RTA_ENCAP]);
687 if (tb[RTA_NEWDST])
688 print_rta_newdst(fp, r, tb[RTA_NEWDST]);
689 if (tb[RTA_GATEWAY])
48a1e96d
DA		 690 print_rta_gateway(fp, r->rtm_family,
691 tb[RTA_GATEWAY]);
f48e1488
SH		 692 if (tb[RTA_VIA])
693 print_rta_via(fp, tb[RTA_VIA]);
694 if (tb[RTA_FLOW])
695 print_rta_flow(fp, tb[RTA_FLOW]);
696 }
697
80d1c528
SH		 698 if ((r->rtm_flags & RTM_F_CLONED) &&
699 r->rtm_type == RTN_MULTICAST) {
4ecefff3
JF		 700 print_string(PRINT_ANY, "dev",
701 "%s", ll_index_to_name(nh->rtnh_ifindex));
702
f48e1488 703 if (nh->rtnh_hops != 1)
4ecefff3
JF		 704 print_int(PRINT_ANY, "ttl", "(ttl>%d)", nh->rtnh_hops);
705
706 print_string(PRINT_FP, NULL, " ", NULL);
f48e1488 707 } else {
4ecefff3
JF		 708 print_string(PRINT_ANY, "dev",
709 "dev %s ", ll_index_to_name(nh->rtnh_ifindex));
710
f48e1488 711 if (r->rtm_family != AF_MPLS)
4ecefff3
JF		 712 print_int(PRINT_ANY, "weight",
713 "weight %d ", nh->rtnh_hops + 1);
f48e1488
SH		 714 }
715
716 print_rt_flags(fp, nh->rtnh_flags);
717
718 len -= NLMSG_ALIGN(nh->rtnh_len);
719 nh = RTNH_NEXT(nh);
4ecefff3
JF		 720
721 close_json_object();
f48e1488 722 }
4ecefff3 723 close_json_array(PRINT_JSON, NULL);
f48e1488
SH		 724}
725
cd554f2c 726int print_route(struct nlmsghdr *n, void *arg)
f4ff11e3 727{
56f5daac 728 FILE *fp = (FILE *)arg;
f4ff11e3
DS		 729 struct rtmsg *r = NLMSG_DATA(n);
730 int len = n->nlmsg_len;
56f5daac 731 struct rtattr *tb[RTA_MAX+1];
663c3cb2 732 int family, color, host_len;
f4ff11e3 733 __u32 table;
2f406f2d 734 int ret;
56f5daac 735
f4ff11e3 736 SPRINT_BUF(b1);
f4ff11e3
DS		 737
738 if (n->nlmsg_type != RTM_NEWROUTE && n->nlmsg_type != RTM_DELROUTE) {
739 fprintf(stderr, "Not a route: %08x %08x %08x\n",
740 n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
ba7b9777 741 return -1;
f4ff11e3
DS		 742 }
743 if (filter.flushb && n->nlmsg_type != RTM_NEWROUTE)
744 return 0;
745 len -= NLMSG_LENGTH(sizeof(*r));
746 if (len < 0) {
747 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
748 return -1;
749 }
750
f3a2ddc1 751 host_len = af_bit_len(r->rtm_family);
f4ff11e3
DS		 752
753 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
754 table = rtm_get_table(r, tb);
755
756 if (!filter_nlmsg(n, tb, host_len))
757 return 0;
758
aba5acdf
SH		 759 if (filter.flushb) {
760 struct nlmsghdr *fn;
56f5daac 761
aba5acdf 762 if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
cc560825
SH		 763 ret = flush_update();
764 if (ret < 0)
2f406f2d 765 return ret;
aba5acdf 766 }
56f5daac 767 fn = (struct nlmsghdr *)(filter.flushb + NLMSG_ALIGN(filter.flushp));
aba5acdf
SH		 768 memcpy(fn, n, n->nlmsg_len);
769 fn->nlmsg_type = RTM_DELROUTE;
770 fn->nlmsg_flags = NLM_F_REQUEST;
351efcde 771 fn->nlmsg_seq = ++rth.seq;
56f5daac 772 filter.flushp = (((char *)fn) + n->nlmsg_len) - filter.flushb;
aba5acdf
SH		 773 filter.flushed++;
774 if (show_stats < 2)
775 return 0;
776 }
777
663c3cb2 778 open_json_object(NULL);
aba5acdf 779 if (n->nlmsg_type == RTM_DELROUTE)
663c3cb2
SH		 780 print_bool(PRINT_ANY, "deleted", "Deleted ", true);
781
d84b1878
DA		 782 if ((r->rtm_type != RTN_UNICAST || show_details > 0) &&
783 (!filter.typemask || (filter.typemask & (1 << r->rtm_type))))
07366177 784 print_string(PRINT_ANY, "type", "%s ",
663c3cb2 785 rtnl_rtntype_n2a(r->rtm_type, b1, sizeof(b1)));
aba5acdf 786
663c3cb2 787 color = COLOR_NONE;
aba5acdf 788 if (tb[RTA_DST]) {
56e3eb4c 789 family = get_real_family(r->rtm_type, r->rtm_family);
663c3cb2
SH		 790 color = ifa_family_color(family);
791
aba5acdf 792 if (r->rtm_dst_len != host_len) {
663c3cb2
SH		 793 snprintf(b1, sizeof(b1),
794 "%s/%u", rt_addr_n2a_rta(family, tb[RTA_DST]),
795 r->rtm_dst_len);
aba5acdf 796 } else {
663c3cb2
SH		 797 format_host_rta_r(family, tb[RTA_DST],
798 b1, sizeof(b1));
799
aba5acdf
SH		 800 }
801 } else if (r->rtm_dst_len) {
663c3cb2 802 snprintf(b1, sizeof(b1), "0/%d ", r->rtm_dst_len);
aba5acdf 803 } else {
663c3cb2 804 strncpy(b1, "default", sizeof(b1));
aba5acdf 805 }
663c3cb2
SH		 806 print_color_string(PRINT_ANY, color,
807 "dst", "%s ", b1);
808
aba5acdf 809 if (tb[RTA_SRC]) {
56e3eb4c 810 family = get_real_family(r->rtm_type, r->rtm_family);
663c3cb2
SH		 811 color = ifa_family_color(family);
812
aba5acdf 813 if (r->rtm_src_len != host_len) {
663c3cb2
SH		 814 snprintf(b1, sizeof(b1),
815 "%s/%u",
816 rt_addr_n2a_rta(family, tb[RTA_SRC]),
817 r->rtm_src_len);
aba5acdf 818 } else {
663c3cb2
SH		 819 format_host_rta_r(family, tb[RTA_SRC],
820 b1, sizeof(b1));
aba5acdf 821 }
663c3cb2
SH		 822 print_color_string(PRINT_ANY, color,
823 "from", "from %s ", b1);
aba5acdf 824 } else if (r->rtm_src_len) {
663c3cb2
SH		 825 snprintf(b1, sizeof(b1), "0/%u", r->rtm_src_len);
826
827 print_string(PRINT_ANY, "src", "from %s ", b1);
aba5acdf 828 }
a3484a9f 829
12387e2c
DA		 830 if (tb[RTA_NH_ID])
831 print_uint(PRINT_ANY, "nhid", "nhid %u ",
832 rta_getattr_u32(tb[RTA_NH_ID]));
833
a3484a9f
SH		 834 if (tb[RTA_NEWDST])
835 print_rta_newdst(fp, r, tb[RTA_NEWDST]);
1e529305
RP		 836
837 if (tb[RTA_ENCAP])
838 lwt_print_encap(fp, tb[RTA_ENCAP_TYPE], tb[RTA_ENCAP]);
839
aba5acdf 840 if (r->rtm_tos && filter.tosmask != -1) {
663c3cb2
SH		 841 print_string(PRINT_ANY, "tos", "tos %s ",
842 rtnl_dsfield_n2a(r->rtm_tos, b1, sizeof(b1)));
aba5acdf 843 }
02d2ae55 844
a3484a9f 845 if (tb[RTA_GATEWAY] && filter.rvia.bitlen != host_len)
48a1e96d 846 print_rta_gateway(fp, r->rtm_family, tb[RTA_GATEWAY]);
a3484a9f
SH		 847
848 if (tb[RTA_VIA])
849 print_rta_via(fp, tb[RTA_VIA]);
56f5daac 850
aba5acdf 851 if (tb[RTA_OIF] && filter.oifmask != -1)
663c3cb2 852 print_rta_if(fp, tb[RTA_OIF], "dev");
aba5acdf 853
bc234301 854 if (table && (table != RT_TABLE_MAIN || show_details > 0) && !filter.tb)
663c3cb2
SH		 855 print_string(PRINT_ANY,
856 "table", "table %s ",
857 rtnl_rttable_n2a(table, b1, sizeof(b1)));
858
80d1c528 859 if (!(r->rtm_flags & RTM_F_CLONED)) {
663c3cb2
SH		 860 if ((r->rtm_protocol != RTPROT_BOOT || show_details > 0) &&
861 filter.protocolmask != -1)
862 print_string(PRINT_ANY,
863 "protocol", "proto %s ",
864 rtnl_rtprot_n2a(r->rtm_protocol,
865 b1, sizeof(b1)));
866
867 if ((r->rtm_scope != RT_SCOPE_UNIVERSE || show_details > 0) &&
868 filter.scopemask != -1)
869 print_string(PRINT_ANY,
870 "scope", "scope %s ",
871 rtnl_rtscope_n2a(r->rtm_scope,
872 b1, sizeof(b1)));
aba5acdf 873 }
663c3cb2 874
aba5acdf 875 if (tb[RTA_PREFSRC] && filter.rprefsrc.bitlen != host_len) {
663c3cb2
SH		 876 const char *psrc
877 = rt_addr_n2a_rta(r->rtm_family, tb[RTA_PREFSRC]);
878
aba5acdf
SH		 879 /* Do not use format_host(). It is our local addr
880 and symbolic name will not be useful.
663c3cb2
SH		 881 */
882 if (is_json_context())
883 print_string(PRINT_JSON, "prefsrc", NULL, psrc);
884 else {
885 fprintf(fp, "src ");
886 print_color_string(PRINT_FP,
887 ifa_family_color(r->rtm_family),
888 NULL, "%s ", psrc);
889 }
890
aba5acdf 891 }
663c3cb2 892
ed7fdc95 893 if (tb[RTA_PRIORITY] && filter.metricmask != -1)
663c3cb2
SH		 894 print_uint(PRINT_ANY, "metric", "metric %u ",
895 rta_getattr_u32(tb[RTA_PRIORITY]));
b3ab1e68
SH		 896
897 print_rt_flags(fp, r->rtm_flags);
898
b0373bfb 899 if (tb[RTA_MARK]) {
9f1370c0 900 unsigned int mark = rta_getattr_u32(tb[RTA_MARK]);
56f5daac 901
b0373bfb 902 if (mark) {
663c3cb2
SH		 903 if (is_json_context())
904 print_uint(PRINT_JSON, "mark", NULL, mark);
905 else if (mark >= 16)
906 print_0xhex(PRINT_FP, NULL,
90c5c969 907 "mark 0x%llx ", mark);
b0373bfb 908 else
663c3cb2
SH		 909 print_uint(PRINT_FP, NULL,
910 "mark %u ", mark);
b0373bfb
ED		 911 }
912 }
aba5acdf 913
5782965a
SH		 914 if (tb[RTA_FLOW] && filter.realmmask != ~0U)
915 print_rta_flow(fp, tb[RTA_FLOW]);
82252cdc
LC		 916
917 if (tb[RTA_UID])
663c3cb2
SH		 918 print_uint(PRINT_ANY, "uid", "uid %u ",
919 rta_getattr_u32(tb[RTA_UID]));
daf30f6f 920
663c3cb2 921 if (r->rtm_family == AF_INET) {
9107c425 922 if (r->rtm_flags & RTM_F_CLONED)
663c3cb2 923 print_cache_flags(fp, r->rtm_flags);
6e41810e 924
9107c425
DA		 925 if (tb[RTA_CACHEINFO])
926 print_rta_cacheinfo(fp, RTA_DATA(tb[RTA_CACHEINFO]));
aba5acdf 927 } else if (r->rtm_family == AF_INET6) {
9107c425
DA		 928 if (tb[RTA_CACHEINFO])
929 print_rta_cacheinfo(fp, RTA_DATA(tb[RTA_CACHEINFO]));
aba5acdf 930 }
6e41810e 931
968272e7
SH		 932 if (tb[RTA_METRICS])
933 print_rta_metrics(fp, tb[RTA_METRICS]);
aba5acdf 934
1506d8d3
SH		 935 if (tb[RTA_IIF] && filter.iifmask != -1)
936 print_rta_if(fp, tb[RTA_IIF], "iif");
b3ab1e68 937
8cfc2d47
SH		 938 if (tb[RTA_PREF])
939 print_rt_pref(fp, rta_getattr_u8(tb[RTA_PREF]));
940
c44d18ea 941 if (tb[RTA_TTL_PROPAGATE]) {
94b0c901 942 bool propagate = rta_getattr_u8(tb[RTA_TTL_PROPAGATE]);
663c3cb2
SH		 943
944 if (is_json_context())
945 print_bool(PRINT_JSON, "ttl-propogate", NULL,
94b0c901 946 propagate);
c44d18ea 947 else
663c3cb2
SH		 948 print_string(PRINT_FP, NULL,
949 "ttl-propogate %s",
94b0c901 950 propagate ? "enabled" : "disabled");
c44d18ea 951 }
663c3cb2 952
320c5c6e
DS		 953 if (tb[RTA_MULTIPATH])
954 print_rta_multipath(fp, r, tb[RTA_MULTIPATH]);
955
956 /* If you are adding new route RTA_XXXX then place it above
957 * the RTA_MULTIPATH else it will appear that the last nexthop
958 * in the ECMP has new attributes
959 */
960
663c3cb2
SH		 961 print_string(PRINT_FP, NULL, "\n", NULL);
962 close_json_object();
aba5acdf
SH		 963 fflush(fp);
964 return 0;
965}
966
1e529305 967static int parse_one_nh(struct nlmsghdr *n, struct rtmsg *r,
bd59e5b1 968 struct rtattr *rta, size_t len, struct rtnexthop *rtnh,
d1f28cf1 969 int *argcp, char ***argvp)
aba5acdf
SH		 970{
971 int argc = *argcp;
972 char **argv = *argvp;
973
974 while (++argv, --argc > 0) {
975 if (strcmp(*argv, "via") == 0) {
4d6c3796 976 inet_prefix addr;
93ae2835 977 int family;
56f5daac 978
aba5acdf 979 NEXT_ARG();
93ae2835
EB		 980 family = read_family(*argv);
981 if (family == AF_UNSPEC)
982 family = r->rtm_family;
983 else
984 NEXT_ARG();
985 get_addr(&addr, *argv, family);
4d6c3796
VB		 986 if (r->rtm_family == AF_UNSPEC)
987 r->rtm_family = addr.family;
93ae2835 988 if (addr.family == r->rtm_family) {
bd59e5b1
PS		 989 if (rta_addattr_l(rta, len, RTA_GATEWAY,
990 &addr.data, addr.bytelen))
991 return -1;
992 rtnh->rtnh_len += sizeof(struct rtattr)
993 + addr.bytelen;
93ae2835 994 } else {
bd59e5b1
PS		 995 if (rta_addattr_l(rta, len, RTA_VIA,
996 &addr.family, addr.bytelen + 2))
997 return -1;
998 rtnh->rtnh_len += RTA_SPACE(addr.bytelen + 2);
93ae2835 999 }
aba5acdf
SH		 1000 } else if (strcmp(*argv, "dev") == 0) {
1001 NEXT_ARG();
cc560825 1002 rtnh->rtnh_ifindex = ll_name_to_index(*argv);
fe99adbc
SP		 1003 if (!rtnh->rtnh_ifindex)
1004 return nodev(*argv);
aba5acdf 1005 } else if (strcmp(*argv, "weight") == 0) {
56f5daac
SH		 1006 unsigned int w;
1007
aba5acdf
SH		 1008 NEXT_ARG();
1009 if (get_unsigned(&w, *argv, 0) || w == 0 || w > 256)
1010 invarg("\"weight\" is invalid\n", *argv);
1011 rtnh->rtnh_hops = w - 1;
1012 } else if (strcmp(*argv, "onlink") == 0) {
1013 rtnh->rtnh_flags |= RTNH_F_ONLINK;
f4f6d640
PM		 1014 } else if (matches(*argv, "realms") == 0) {
1015 __u32 realm;
56f5daac 1016
f4f6d640 1017 NEXT_ARG();
d583e88e 1018 if (get_rt_realms_or_raw(&realm, *argv))
f4f6d640 1019 invarg("\"realm\" value is invalid\n", *argv);
bd59e5b1
PS		 1020 if (rta_addattr32(rta, len, RTA_FLOW, realm))
1021 return -1;
f4f6d640 1022 rtnh->rtnh_len += sizeof(struct rtattr) + 4;
1e529305 1023 } else if (strcmp(*argv, "encap") == 0) {
bd59e5b1 1024 int old_len = rta->rta_len;
1e529305 1025
73924010
DA		 1026 if (lwt_parse_encap(rta, len, &argc, &argv,
1027 RTA_ENCAP, RTA_ENCAP_TYPE))
bd59e5b1
PS		 1028 return -1;
1029 rtnh->rtnh_len += rta->rta_len - old_len;
ecc509f9
RP		 1030 } else if (strcmp(*argv, "as") == 0) {
1031 inet_prefix addr;
1032
1033 NEXT_ARG();
1034 if (strcmp(*argv, "to") == 0)
1035 NEXT_ARG();
1036 get_addr(&addr, *argv, r->rtm_family);
bd59e5b1
PS		 1037 if (rta_addattr_l(rta, len, RTA_NEWDST,
1038 &addr.data, addr.bytelen))
1039 return -1;
ecc509f9 1040 rtnh->rtnh_len += sizeof(struct rtattr) + addr.bytelen;
aba5acdf
SH		 1041 } else
1042 break;
1043 }
1044 *argcp = argc;
1045 *argvp = argv;
1046 return 0;
1047}
1048
d1f28cf1
SH		 1049static int parse_nexthops(struct nlmsghdr *n, struct rtmsg *r,
1050 int argc, char **argv)
aba5acdf 1051{
bd59e5b1 1052 char buf[4096];
56f5daac 1053 struct rtattr *rta = (void *)buf;
aba5acdf
SH		 1054 struct rtnexthop *rtnh;
1055
1056 rta->rta_type = RTA_MULTIPATH;
1057 rta->rta_len = RTA_LENGTH(0);
1058 rtnh = RTA_DATA(rta);
1059
1060 while (argc > 0) {
1061 if (strcmp(*argv, "nexthop") != 0) {
1062 fprintf(stderr, "Error: \"nexthop\" or end of line is expected instead of \"%s\"\n", *argv);
1063 exit(-1);
1064 }
1065 if (argc <= 1) {
1066 fprintf(stderr, "Error: unexpected end of line after \"nexthop\"\n");
1067 exit(-1);
1068 }
1069 memset(rtnh, 0, sizeof(*rtnh));
1070 rtnh->rtnh_len = sizeof(*rtnh);
1071 rta->rta_len += rtnh->rtnh_len;
bd59e5b1 1072 if (parse_one_nh(n, r, rta, 4096, rtnh, &argc, &argv)) {
ee53b42f
JS		 1073 fprintf(stderr, "Error: cannot parse nexthop\n");
1074 exit(-1);
1075 }
aba5acdf
SH		 1076 rtnh = RTNH_NEXT(rtnh);
1077 }
1078
1079 if (rta->rta_len > RTA_LENGTH(0))
bd59e5b1
PS		 1080 return addattr_l(n, 4096, RTA_MULTIPATH,
1081 RTA_DATA(rta), RTA_PAYLOAD(rta));
aba5acdf
SH		 1082 return 0;
1083}
1084
56f5daac 1085static int iproute_modify(int cmd, unsigned int flags, int argc, char **argv)
aba5acdf 1086{
aba5acdf 1087 struct {
4806867a
SH		 1088 struct nlmsghdr n;
1089 struct rtmsg r;
bd59e5b1 1090 char buf[4096];
d17b136f
PS		 1091 } req = {
1092 .n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg)),
1093 .n.nlmsg_flags = NLM_F_REQUEST | flags,
1094 .n.nlmsg_type = cmd,
1095 .r.rtm_family = preferred_family,
1096 .r.rtm_table = RT_TABLE_MAIN,
1097 .r.rtm_scope = RT_SCOPE_NOWHERE,
1098 };
aba5acdf 1099 char mxbuf[256];
56f5daac
SH		 1100 struct rtattr *mxrta = (void *)mxbuf;
1101 unsigned int mxlock = 0;
aba5acdf
SH		 1102 char *d = NULL;
1103 int gw_ok = 0;
1104 int dst_ok = 0;
1105 int nhs_ok = 0;
1106 int scope_ok = 0;
1107 int table_ok = 0;
54e0b2e7 1108 int raw = 0;
f638e9f7 1109 int type_ok = 0;
12387e2c 1110 __u32 nhid = 0;
aba5acdf 1111
aba5acdf
SH		 1112 if (cmd != RTM_DELROUTE) {
1113 req.r.rtm_protocol = RTPROT_BOOT;
1114 req.r.rtm_scope = RT_SCOPE_UNIVERSE;
1115 req.r.rtm_type = RTN_UNICAST;
1116 }
1117
1118 mxrta->rta_type = RTA_METRICS;
1119 mxrta->rta_len = RTA_LENGTH(0);
1120
1121 while (argc > 0) {
1122 if (strcmp(*argv, "src") == 0) {
1123 inet_prefix addr;
56f5daac 1124
aba5acdf
SH		 1125 NEXT_ARG();
1126 get_addr(&addr, *argv, req.r.rtm_family);
1127 if (req.r.rtm_family == AF_UNSPEC)
1128 req.r.rtm_family = addr.family;
21fef525
SH		 1129 addattr_l(&req.n, sizeof(req),
1130 RTA_PREFSRC, &addr.data, addr.bytelen);
6f7a9f4d
EB		 1131 } else if (strcmp(*argv, "as") == 0) {
1132 inet_prefix addr;
56f5daac 1133
6f7a9f4d
EB		 1134 NEXT_ARG();
1135 if (strcmp(*argv, "to") == 0) {
1136 NEXT_ARG();
1137 }
1138 get_addr(&addr, *argv, req.r.rtm_family);
1139 if (req.r.rtm_family == AF_UNSPEC)
1140 req.r.rtm_family = addr.family;
21fef525
SH		 1141 addattr_l(&req.n, sizeof(req),
1142 RTA_NEWDST, &addr.data, addr.bytelen);
aba5acdf
SH		 1143 } else if (strcmp(*argv, "via") == 0) {
1144 inet_prefix addr;
93ae2835 1145 int family;
56f5daac 1146
11f2c753
DA		 1147 if (gw_ok) {
1148 invarg("use nexthop syntax to specify multiple via\n",
1149 *argv);
1150 }
aba5acdf
SH		 1151 gw_ok = 1;
1152 NEXT_ARG();
93ae2835
EB		 1153 family = read_family(*argv);
1154 if (family == AF_UNSPEC)
1155 family = req.r.rtm_family;
1156 else
1157 NEXT_ARG();
1158 get_addr(&addr, *argv, family);
aba5acdf
SH		 1159 if (req.r.rtm_family == AF_UNSPEC)
1160 req.r.rtm_family = addr.family;
93ae2835 1161 if (addr.family == req.r.rtm_family)
ecc509f9
RP		 1162 addattr_l(&req.n, sizeof(req), RTA_GATEWAY,
1163 &addr.data, addr.bytelen);
93ae2835 1164 else
ecc509f9
RP		 1165 addattr_l(&req.n, sizeof(req), RTA_VIA,
1166 &addr.family, addr.bytelen+2);
aba5acdf
SH		 1167 } else if (strcmp(*argv, "from") == 0) {
1168 inet_prefix addr;
56f5daac 1169
aba5acdf
SH		 1170 NEXT_ARG();
1171 get_prefix(&addr, *argv, req.r.rtm_family);
1172 if (req.r.rtm_family == AF_UNSPEC)
1173 req.r.rtm_family = addr.family;
1174 if (addr.bytelen)
1175 addattr_l(&req.n, sizeof(req), RTA_SRC, &addr.data, addr.bytelen);
1176 req.r.rtm_src_len = addr.bitlen;
1177 } else if (strcmp(*argv, "tos") == 0 ||
1178 matches(*argv, "dsfield") == 0) {
1179 __u32 tos;
56f5daac 1180
aba5acdf
SH		 1181 NEXT_ARG();
1182 if (rtnl_dsfield_a2n(&tos, *argv))
1183 invarg("\"tos\" value is invalid\n", *argv);
1184 req.r.rtm_tos = tos;
56f5daac 1185 } else if (strcmp(*argv, "expires") == 0) {
68eede25 1186 __u32 expires;
56f5daac 1187
68eede25
HL		 1188 NEXT_ARG();
1189 if (get_u32(&expires, *argv, 0))
1190 invarg("\"expires\" value is invalid\n", *argv);
eecc0069 1191 addattr32(&req.n, sizeof(req), RTA_EXPIRES, expires);
aba5acdf
SH		 1192 } else if (matches(*argv, "metric") == 0 ||
1193 matches(*argv, "priority") == 0 ||
194e9b85 1194 strcmp(*argv, "preference") == 0) {
aba5acdf 1195 __u32 metric;
56f5daac 1196
aba5acdf
SH		 1197 NEXT_ARG();
1198 if (get_u32(&metric, *argv, 0))
1199 invarg("\"metric\" value is invalid\n", *argv);
1200 addattr32(&req.n, sizeof(req), RTA_PRIORITY, metric);
1201 } else if (strcmp(*argv, "scope") == 0) {
f332d169 1202 __u32 scope = 0;
56f5daac 1203
aba5acdf
SH		 1204 NEXT_ARG();
1205 if (rtnl_rtscope_a2n(&scope, *argv))
1206 invarg("invalid \"scope\" value\n", *argv);
1207 req.r.rtm_scope = scope;
1208 scope_ok = 1;
1209 } else if (strcmp(*argv, "mtu") == 0) {
56f5daac
SH		 1210 unsigned int mtu;
1211
aba5acdf
SH		 1212 NEXT_ARG();
1213 if (strcmp(*argv, "lock") == 0) {
1214 mxlock |= (1<<RTAX_MTU);
1215 NEXT_ARG();
1216 }
1217 if (get_unsigned(&mtu, *argv, 0))
1218 invarg("\"mtu\" value is invalid\n", *argv);
1219 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_MTU, mtu);
71e58151 1220 } else if (strcmp(*argv, "hoplimit") == 0) {
56f5daac
SH		 1221 unsigned int hoplimit;
1222
71e58151
GBY		 1223 NEXT_ARG();
1224 if (strcmp(*argv, "lock") == 0) {
1225 mxlock |= (1<<RTAX_HOPLIMIT);
1226 NEXT_ARG();
1227 }
ea6cbab7 1228 if (get_unsigned(&hoplimit, *argv, 0) || hoplimit > 255)
71e58151
GBY		 1229 invarg("\"hoplimit\" value is invalid\n", *argv);
1230 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_HOPLIMIT, hoplimit);
aba5acdf 1231 } else if (strcmp(*argv, "advmss") == 0) {
56f5daac
SH		 1232 unsigned int mss;
1233
aba5acdf
SH		 1234 NEXT_ARG();
1235 if (strcmp(*argv, "lock") == 0) {
1236 mxlock |= (1<<RTAX_ADVMSS);
1237 NEXT_ARG();
1238 }
1239 if (get_unsigned(&mss, *argv, 0))
1240 invarg("\"mss\" value is invalid\n", *argv);
1241 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_ADVMSS, mss);
aba5acdf 1242 } else if (matches(*argv, "reordering") == 0) {
56f5daac
SH		 1243 unsigned int reord;
1244
aba5acdf
SH		 1245 NEXT_ARG();
1246 if (strcmp(*argv, "lock") == 0) {
1247 mxlock |= (1<<RTAX_REORDERING);
1248 NEXT_ARG();
1249 }
1250 if (get_unsigned(&reord, *argv, 0))
1251 invarg("\"reordering\" value is invalid\n", *argv);
1252 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_REORDERING, reord);
aba5acdf 1253 } else if (strcmp(*argv, "rtt") == 0) {
56f5daac
SH		 1254 unsigned int rtt;
1255
aba5acdf
SH		 1256 NEXT_ARG();
1257 if (strcmp(*argv, "lock") == 0) {
1258 mxlock |= (1<<RTAX_RTT);
1259 NEXT_ARG();
1260 }
81d03dc3 1261 if (get_time_rtt(&rtt, *argv, &raw))
aba5acdf 1262 invarg("\"rtt\" value is invalid\n", *argv);
0612519e 1263 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTT,
54e0b2e7
RJ		 1264 (raw) ? rtt : rtt * 8);
1265 } else if (strcmp(*argv, "rto_min") == 0) {
56f5daac
SH		 1266 unsigned int rto_min;
1267
54e0b2e7
RJ		 1268 NEXT_ARG();
1269 mxlock |= (1<<RTAX_RTO_MIN);
81d03dc3 1270 if (get_time_rtt(&rto_min, *argv, &raw))
54e0b2e7
RJ		 1271 invarg("\"rto_min\" value is invalid\n",
1272 *argv);
1273 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTO_MIN,
1274 rto_min);
aba5acdf 1275 } else if (matches(*argv, "window") == 0) {
56f5daac
SH		 1276 unsigned int win;
1277
aba5acdf
SH		 1278 NEXT_ARG();
1279 if (strcmp(*argv, "lock") == 0) {
1280 mxlock |= (1<<RTAX_WINDOW);
1281 NEXT_ARG();
1282 }
1283 if (get_unsigned(&win, *argv, 0))
1284 invarg("\"window\" value is invalid\n", *argv);
1285 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_WINDOW, win);
1286 } else if (matches(*argv, "cwnd") == 0) {
56f5daac
SH		 1287 unsigned int win;
1288
aba5acdf
SH		 1289 NEXT_ARG();
1290 if (strcmp(*argv, "lock") == 0) {
1291 mxlock |= (1<<RTAX_CWND);
1292 NEXT_ARG();
1293 }
1294 if (get_unsigned(&win, *argv, 0))
1295 invarg("\"cwnd\" value is invalid\n", *argv);
1296 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_CWND, win);
a1f1143e 1297 } else if (matches(*argv, "initcwnd") == 0) {
56f5daac
SH		 1298 unsigned int win;
1299
a1f1143e
VW		 1300 NEXT_ARG();
1301 if (strcmp(*argv, "lock") == 0) {
1302 mxlock |= (1<<RTAX_INITCWND);
1303 NEXT_ARG();
1304 }
1305 if (get_unsigned(&win, *argv, 0))
1306 invarg("\"initcwnd\" value is invalid\n", *argv);
21fef525
SH		 1307 rta_addattr32(mxrta, sizeof(mxbuf),
1308 RTAX_INITCWND, win);
f5fd8003 1309 } else if (matches(*argv, "initrwnd") == 0) {
56f5daac
SH		 1310 unsigned int win;
1311
f5fd8003 1312 NEXT_ARG();
1313 if (strcmp(*argv, "lock") == 0) {
1314 mxlock |= (1<<RTAX_INITRWND);
1315 NEXT_ARG();
1316 }
1317 if (get_unsigned(&win, *argv, 0))
1318 invarg("\"initrwnd\" value is invalid\n", *argv);
21fef525
SH		 1319 rta_addattr32(mxrta, sizeof(mxbuf),
1320 RTAX_INITRWND, win);
29d1f730
FW		 1321 } else if (matches(*argv, "features") == 0) {
1322 unsigned int features = 0;
1323
1324 while (argc > 0) {
1325 NEXT_ARG();
1326
1327 if (strcmp(*argv, "ecn") == 0)
1328 features |= RTAX_FEATURE_ECN;
1329 else
1330 invarg("\"features\" value not valid\n", *argv);
1331 break;
1332 }
1333
21fef525
SH		 1334 rta_addattr32(mxrta, sizeof(mxbuf),
1335 RTAX_FEATURES, features);
b37f2c89 1336 } else if (matches(*argv, "quickack") == 0) {
56f5daac
SH		 1337 unsigned int quickack;
1338
b37f2c89
CW		 1339 NEXT_ARG();
1340 if (get_unsigned(&quickack, *argv, 0))
1341 invarg("\"quickack\" value is invalid\n", *argv);
1342 if (quickack != 1 && quickack != 0)
1343 invarg("\"quickack\" value should be 0 or 1\n", *argv);
21fef525
SH		 1344 rta_addattr32(mxrta, sizeof(mxbuf),
1345 RTAX_QUICKACK, quickack);
6ef87f9c
DB		 1346 } else if (matches(*argv, "congctl") == 0) {
1347 NEXT_ARG();
1348 if (strcmp(*argv, "lock") == 0) {
1349 mxlock |= 1 << RTAX_CC_ALGO;
1350 NEXT_ARG();
1351 }
1352 rta_addattr_l(mxrta, sizeof(mxbuf), RTAX_CC_ALGO, *argv,
1353 strlen(*argv));
aba5acdf 1354 } else if (matches(*argv, "rttvar") == 0) {
56f5daac
SH		 1355 unsigned int win;
1356
aba5acdf
SH		 1357 NEXT_ARG();
1358 if (strcmp(*argv, "lock") == 0) {
1359 mxlock |= (1<<RTAX_RTTVAR);
1360 NEXT_ARG();
1361 }
81d03dc3 1362 if (get_time_rtt(&win, *argv, &raw))
aba5acdf 1363 invarg("\"rttvar\" value is invalid\n", *argv);
54e0b2e7
RJ		 1364 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTTVAR,
1365 (raw) ? win : win * 4);
aba5acdf 1366 } else if (matches(*argv, "ssthresh") == 0) {
56f5daac
SH		 1367 unsigned int win;
1368
aba5acdf
SH		 1369 NEXT_ARG();
1370 if (strcmp(*argv, "lock") == 0) {
1371 mxlock |= (1<<RTAX_SSTHRESH);
1372 NEXT_ARG();
1373 }
1374 if (get_unsigned(&win, *argv, 0))
1375 invarg("\"ssthresh\" value is invalid\n", *argv);
1376 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_SSTHRESH, win);
1377 } else if (matches(*argv, "realms") == 0) {
1378 __u32 realm;
56f5daac 1379
aba5acdf 1380 NEXT_ARG();
d583e88e 1381 if (get_rt_realms_or_raw(&realm, *argv))
aba5acdf
SH		 1382 invarg("\"realm\" value is invalid\n", *argv);
1383 addattr32(&req.n, sizeof(req), RTA_FLOW, realm);
1384 } else if (strcmp(*argv, "onlink") == 0) {
1385 req.r.rtm_flags |= RTNH_F_ONLINK;
aba5acdf
SH		 1386 } else if (strcmp(*argv, "nexthop") == 0) {
1387 nhs_ok = 1;
1388 break;
12387e2c
DA		 1389 } else if (!strcmp(*argv, "nhid")) {
1390 NEXT_ARG();
1391 if (get_u32(&nhid, *argv, 0))
1392 invarg("\"id\" value is invalid\n", *argv);
1393 addattr32(&req.n, sizeof(req), RTA_NH_ID, nhid);
aba5acdf 1394 } else if (matches(*argv, "protocol") == 0) {
f332d169 1395 __u32 prot;
56f5daac 1396
aba5acdf
SH		 1397 NEXT_ARG();
1398 if (rtnl_rtprot_a2n(&prot, *argv))
1399 invarg("\"protocol\" value is invalid\n", *argv);
1400 req.r.rtm_protocol = prot;
aba5acdf 1401 } else if (matches(*argv, "table") == 0) {
f332d169 1402 __u32 tid;
56f5daac 1403
aba5acdf
SH		 1404 NEXT_ARG();
1405 if (rtnl_rttable_a2n(&tid, *argv))
1406 invarg("\"table\" value is invalid\n", *argv);
34e95647
PM		 1407 if (tid < 256)
1408 req.r.rtm_table = tid;
1409 else {
1410 req.r.rtm_table = RT_TABLE_UNSPEC;
1411 addattr32(&req.n, sizeof(req), RTA_TABLE, tid);
1412 }
aba5acdf 1413 table_ok = 1;
0130f012
DA		 1414 } else if (matches(*argv, "vrf") == 0) {
1415 __u32 tid;
1416
1417 NEXT_ARG();
1418 tid = ipvrf_get_table(*argv);
1419 if (tid == 0)
1420 invarg("Invalid VRF\n", *argv);
1421 if (tid < 256)
1422 req.r.rtm_table = tid;
1423 else {
1424 req.r.rtm_table = RT_TABLE_UNSPEC;
1425 addattr32(&req.n, sizeof(req), RTA_TABLE, tid);
1426 }
1427 table_ok = 1;
aba5acdf
SH		 1428 } else if (strcmp(*argv, "dev") == 0 ||
1429 strcmp(*argv, "oif") == 0) {
1430 NEXT_ARG();
1431 d = *argv;
194e9b85
LR		 1432 } else if (matches(*argv, "pref") == 0) {
1433 __u8 pref;
56f5daac 1434
194e9b85
LR		 1435 NEXT_ARG();
1436 if (strcmp(*argv, "low") == 0)
1437 pref = ICMPV6_ROUTER_PREF_LOW;
1438 else if (strcmp(*argv, "medium") == 0)
1439 pref = ICMPV6_ROUTER_PREF_MEDIUM;
1440 else if (strcmp(*argv, "high") == 0)
1441 pref = ICMPV6_ROUTER_PREF_HIGH;
1442 else if (get_u8(&pref, *argv, 0))
1443 invarg("\"pref\" value is invalid\n", *argv);
1444 addattr8(&req.n, sizeof(req), RTA_PREF, pref);
1e529305
RP		 1445 } else if (strcmp(*argv, "encap") == 0) {
1446 char buf[1024];
56f5daac 1447 struct rtattr *rta = (void *)buf;
1e529305
RP		 1448
1449 rta->rta_type = RTA_ENCAP;
1450 rta->rta_len = RTA_LENGTH(0);
1451
73924010
DA		 1452 lwt_parse_encap(rta, sizeof(buf), &argc, &argv,
1453 RTA_ENCAP, RTA_ENCAP_TYPE);
1e529305
RP		 1454
1455 if (rta->rta_len > RTA_LENGTH(0))
21fef525
SH		 1456 addraw_l(&req.n, 1024
1457 , RTA_DATA(rta), RTA_PAYLOAD(rta));
c44d18ea
RS		 1458 } else if (strcmp(*argv, "ttl-propagate") == 0) {
1459 __u8 ttl_prop;
1460
1461 NEXT_ARG();
1462 if (matches(*argv, "enabled") == 0)
1463 ttl_prop = 1;
1464 else if (matches(*argv, "disabled") == 0)
1465 ttl_prop = 0;
1466 else
1467 invarg("\"ttl-propagate\" value is invalid\n",
1468 *argv);
1469
1470 addattr8(&req.n, sizeof(req), RTA_TTL_PROPAGATE,
1471 ttl_prop);
e54ed380
CP		 1472 } else if (matches(*argv, "fastopen_no_cookie") == 0) {
1473 unsigned int fastopen_no_cookie;
1474
1475 NEXT_ARG();
1476 if (get_unsigned(&fastopen_no_cookie, *argv, 0))
1477 invarg("\"fastopen_no_cookie\" value is invalid\n", *argv);
1478 if (fastopen_no_cookie != 1 && fastopen_no_cookie != 0)
1479 invarg("\"fastopen_no_cookie\" value should be 0 or 1\n", *argv);
1480 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_FASTOPEN_NO_COOKIE, fastopen_no_cookie);
aba5acdf
SH		 1481 } else {
1482 int type;
1483 inet_prefix dst;
1484
1485 if (strcmp(*argv, "to") == 0) {
1486 NEXT_ARG();
1487 }
1488 if ((**argv < '0' || **argv > '9') &&
1489 rtnl_rtntype_a2n(&type, *argv) == 0) {
1490 NEXT_ARG();
1491 req.r.rtm_type = type;
f638e9f7 1492 type_ok = 1;
aba5acdf
SH		 1493 }
1494
1495 if (matches(*argv, "help") == 0)
1496 usage();
1497 if (dst_ok)
1498 duparg2("to", *argv);
1499 get_prefix(&dst, *argv, req.r.rtm_family);
1500 if (req.r.rtm_family == AF_UNSPEC)
1501 req.r.rtm_family = dst.family;
1502 req.r.rtm_dst_len = dst.bitlen;
1503 dst_ok = 1;
1504 if (dst.bytelen)
21fef525
SH		 1505 addattr_l(&req.n, sizeof(req),
1506 RTA_DST, &dst.data, dst.bytelen);
aba5acdf
SH		 1507 }
1508 argc--; argv++;
1509 }
1510
922b4822
PS		 1511 if (!dst_ok)
1512 usage();
1513
7b201d60 1514 if (d) {
cc560825 1515 int idx = ll_name_to_index(d);
aba5acdf 1516
fe99adbc
SP		 1517 if (!idx)
1518 return nodev(d);
7b201d60 1519 addattr32(&req.n, sizeof(req), RTA_OIF, idx);
aba5acdf
SH		 1520 }
1521
1522 if (mxrta->rta_len > RTA_LENGTH(0)) {
1523 if (mxlock)
1524 rta_addattr32(mxrta, sizeof(mxbuf), RTAX_LOCK, mxlock);
1525 addattr_l(&req.n, sizeof(req), RTA_METRICS, RTA_DATA(mxrta), RTA_PAYLOAD(mxrta));
1526 }
1527
bd59e5b1
PS		 1528 if (nhs_ok && parse_nexthops(&req.n, &req.r, argc, argv))
1529 return -1;
aba5acdf 1530
f638e9f7
RP		 1531 if (req.r.rtm_family == AF_UNSPEC)
1532 req.r.rtm_family = AF_INET;
1533
aba5acdf
SH		 1534 if (!table_ok) {
1535 if (req.r.rtm_type == RTN_LOCAL ||
1536 req.r.rtm_type == RTN_BROADCAST ||
1537 req.r.rtm_type == RTN_NAT ||
1538 req.r.rtm_type == RTN_ANYCAST)
1539 req.r.rtm_table = RT_TABLE_LOCAL;
1540 }
1541 if (!scope_ok) {
f638e9f7
RP		 1542 if (req.r.rtm_family == AF_INET6 ||
1543 req.r.rtm_family == AF_MPLS)
1544 req.r.rtm_scope = RT_SCOPE_UNIVERSE;
1545 else if (req.r.rtm_type == RTN_LOCAL ||
1546 req.r.rtm_type == RTN_NAT)
aba5acdf
SH		 1547 req.r.rtm_scope = RT_SCOPE_HOST;
1548 else if (req.r.rtm_type == RTN_BROADCAST ||
1549 req.r.rtm_type == RTN_MULTICAST ||
1550 req.r.rtm_type == RTN_ANYCAST)
1551 req.r.rtm_scope = RT_SCOPE_LINK;
1552 else if (req.r.rtm_type == RTN_UNICAST ||
1553 req.r.rtm_type == RTN_UNSPEC) {
1554 if (cmd == RTM_DELROUTE)
1555 req.r.rtm_scope = RT_SCOPE_NOWHERE;
12387e2c 1556 else if (!gw_ok && !nhs_ok && !nhid)
aba5acdf
SH		 1557 req.r.rtm_scope = RT_SCOPE_LINK;
1558 }
1559 }
1560
f638e9f7
RP		 1561 if (!type_ok && req.r.rtm_family == AF_MPLS)
1562 req.r.rtm_type = RTN_UNICAST;
aba5acdf 1563
86bf43c7 1564 if (rtnl_talk(&rth, &req.n, NULL) < 0)
d58ba4ba 1565 return -2;
aba5acdf
SH		 1566
1567 return 0;
1568}
1569
aba5acdf
SH		 1570static int iproute_flush_cache(void)
1571{
1572#define ROUTE_FLUSH_PATH "/proc/sys/net/ipv4/route/flush"
1573
1574 int len;
56f5daac 1575 int flush_fd = open(ROUTE_FLUSH_PATH, O_WRONLY);
aba5acdf
SH		 1576 char *buffer = "-1";
1577
1578 if (flush_fd < 0) {
56f5daac 1579 fprintf(stderr, "Cannot open \"%s\": %s\n",
9827fa57 1580 ROUTE_FLUSH_PATH, strerror(errno));
aba5acdf
SH		 1581 return -1;
1582 }
1583
56f5daac 1584 len = strlen(buffer);
ae665a52 1585
56f5daac
SH		 1586 if ((write(flush_fd, (void *)buffer, len)) < len) {
1587 fprintf(stderr, "Cannot flush routing cache\n");
25352af7 1588 close(flush_fd);
aba5acdf
SH		 1589 return -1;
1590 }
1591 close(flush_fd);
1592 return 0;
1593}
1594
76c61b34
PE		 1595static __u32 route_dump_magic = 0x45311224;
1596
cd554f2c 1597static int save_route(struct nlmsghdr *n, void *arg)
f4ff11e3
DS		 1598{
1599 int ret;
1600 int len = n->nlmsg_len;
1601 struct rtmsg *r = NLMSG_DATA(n);
1602 struct rtattr *tb[RTA_MAX+1];
f3a2ddc1 1603 int host_len;
f4ff11e3 1604
f3a2ddc1 1605 host_len = af_bit_len(r->rtm_family);
f4ff11e3
DS		 1606 len -= NLMSG_LENGTH(sizeof(*r));
1607 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
1608
1609 if (!filter_nlmsg(n, tb, host_len))
1610 return 0;
1611
1612 ret = write(STDOUT_FILENO, n, n->nlmsg_len);
1613 if ((ret > 0) && (ret != n->nlmsg_len)) {
1614 fprintf(stderr, "Short write while saving nlmsg\n");
1615 ret = -EIO;
1616 }
1617
1618 return ret == n->nlmsg_len ? 0 : ret;
1619}
aba5acdf 1620
76c61b34
PE		 1621static int save_route_prep(void)
1622{
1623 int ret;
1624
1625 if (isatty(STDOUT_FILENO)) {
14645ec2 1626 fprintf(stderr, "Not sending a binary stream to stdout\n");
76c61b34
PE		 1627 return -1;
1628 }
1629
1630 ret = write(STDOUT_FILENO, &route_dump_magic, sizeof(route_dump_magic));
1631 if (ret != sizeof(route_dump_magic)) {
1632 fprintf(stderr, "Can't write magic to dump file\n");
1633 return -1;
1634 }
1635
1636 return 0;
1637}
1638
b5cf2636
SB		 1639static int iproute_dump_filter(struct nlmsghdr *nlh, int reqlen)
1640{
1641 struct rtmsg *rtm = NLMSG_DATA(nlh);
1642 int err;
1643
1644 rtm->rtm_protocol = filter.protocol;
1645 if (filter.cloned)
1646 rtm->rtm_flags |= RTM_F_CLONED;
1647
1648 if (filter.tb) {
1649 err = addattr32(nlh, reqlen, RTA_TABLE, filter.tb);
1650 if (err)
1651 return err;
1652 }
1653
1654 if (filter.oif) {
1655 err = addattr32(nlh, reqlen, RTA_OIF, filter.oif);
1656 if (err)
1657 return err;
1658 }
1659
1660 return 0;
1661}
1662
8d4f35de 1663static int iproute_flush(int family, rtnl_filter_t filter_fn)
432e5f97
SH		 1664{
1665 time_t start = time(0);
1666 char flushb[4096-512];
1667 int round = 0;
1668 int ret;
1669
1670 if (filter.cloned) {
8d4f35de 1671 if (family != AF_INET6) {
432e5f97
SH		 1672 iproute_flush_cache();
1673 if (show_stats)
1674 printf("*** IPv4 routing cache is flushed.\n");
1675 }
8d4f35de 1676 if (family == AF_INET)
432e5f97
SH		 1677 return 0;
1678 }
1679
1680 filter.flushb = flushb;
1681 filter.flushp = 0;
1682 filter.flushe = sizeof(flushb);
1683
1684 for (;;) {
b5cf2636 1685 if (rtnl_routedump_req(&rth, family, iproute_dump_filter) < 0) {
432e5f97
SH		 1686 perror("Cannot send dump request");
1687 return -2;
1688 }
1689 filter.flushed = 0;
1690 if (rtnl_dump_filter(&rth, filter_fn, stdout) < 0) {
1691 fprintf(stderr, "Flush terminated\n");
1692 return -2;
1693 }
1694 if (filter.flushed == 0) {
1695 if (show_stats) {
1696 if (round == 0 &&
8d4f35de 1697 (!filter.cloned || family == AF_INET6))
432e5f97
SH		 1698 printf("Nothing to flush.\n");
1699 else
1700 printf("*** Flush is complete after %d round%s ***\n",
1701 round, round > 1 ? "s" : "");
1702 }
1703 fflush(stdout);
1704 return 0;
1705 }
1706 round++;
1707 ret = flush_update();
1708 if (ret < 0)
1709 return ret;
1710
1711 if (time(0) - start > 30) {
1712 printf("\n*** Flush not completed after %ld seconds, %d entries remain ***\n",
1713 (long)(time(0) - start), filter.flushed);
1714 return -1;
1715 }
1716
1717 if (show_stats) {
1718 printf("\n*** Round %d, deleting %d entries ***\n",
1719 round, filter.flushed);
1720 fflush(stdout);
1721 }
1722 }
1723}
1724
f4ff11e3 1725static int iproute_list_flush_or_save(int argc, char **argv, int action)
aba5acdf 1726{
8d4f35de 1727 int dump_family = preferred_family;
aba5acdf
SH		 1728 char *id = NULL;
1729 char *od = NULL;
b0373bfb 1730 unsigned int mark = 0;
f4ff11e3
DS		 1731 rtnl_filter_t filter_fn;
1732
76c61b34
PE		 1733 if (action == IPROUTE_SAVE) {
1734 if (save_route_prep())
1735 return -1;
1736
f4ff11e3 1737 filter_fn = save_route;
76c61b34 1738 } else
f4ff11e3 1739 filter_fn = print_route;
aba5acdf 1740
093b7646 1741 iproute_reset_filter(0);
aba5acdf
SH		 1742 filter.tb = RT_TABLE_MAIN;
1743
f4ff11e3 1744 if ((action == IPROUTE_FLUSH) && argc <= 0) {
aba5acdf
SH		 1745 fprintf(stderr, "\"ip route flush\" requires arguments.\n");
1746 return -1;
1747 }
1748
1749 while (argc > 0) {
1750 if (matches(*argv, "table") == 0) {
f332d169 1751 __u32 tid;
56f5daac 1752
aba5acdf
SH		 1753 NEXT_ARG();
1754 if (rtnl_rttable_a2n(&tid, *argv)) {
1755 if (strcmp(*argv, "all") == 0) {
bd4bcdad 1756 filter.tb = 0;
aba5acdf 1757 } else if (strcmp(*argv, "cache") == 0) {
bd4bcdad 1758 filter.cloned = 1;
aba5acdf
SH		 1759 } else if (strcmp(*argv, "help") == 0) {
1760 usage();
1761 } else {
1762 invarg("table id value is invalid\n", *argv);
1763 }
bd4bcdad
PM		 1764 } else
1765 filter.tb = tid;
0130f012
DA		 1766 } else if (matches(*argv, "vrf") == 0) {
1767 __u32 tid;
1768
1769 NEXT_ARG();
1770 tid = ipvrf_get_table(*argv);
1771 if (tid == 0)
1772 invarg("Invalid VRF\n", *argv);
1773 filter.tb = tid;
1774 filter.typemask = ~(1 << RTN_LOCAL | 1<<RTN_BROADCAST);
aba5acdf
SH		 1775 } else if (matches(*argv, "cached") == 0 ||
1776 matches(*argv, "cloned") == 0) {
bd4bcdad 1777 filter.cloned = 1;
aba5acdf
SH		 1778 } else if (strcmp(*argv, "tos") == 0 ||
1779 matches(*argv, "dsfield") == 0) {
1780 __u32 tos;
56f5daac 1781
aba5acdf
SH		 1782 NEXT_ARG();
1783 if (rtnl_dsfield_a2n(&tos, *argv))
1784 invarg("TOS value is invalid\n", *argv);
1785 filter.tos = tos;
1786 filter.tosmask = -1;
1787 } else if (matches(*argv, "protocol") == 0) {
f332d169 1788 __u32 prot = 0;
56f5daac 1789
aba5acdf
SH		 1790 NEXT_ARG();
1791 filter.protocolmask = -1;
1792 if (rtnl_rtprot_a2n(&prot, *argv)) {
1793 if (strcmp(*argv, "all") != 0)
1794 invarg("invalid \"protocol\"\n", *argv);
1795 prot = 0;
1796 filter.protocolmask = 0;
1797 }
1798 filter.protocol = prot;
1799 } else if (matches(*argv, "scope") == 0) {
f332d169 1800 __u32 scope = 0;
56f5daac 1801
aba5acdf
SH		 1802 NEXT_ARG();
1803 filter.scopemask = -1;
1804 if (rtnl_rtscope_a2n(&scope, *argv)) {
1805 if (strcmp(*argv, "all") != 0)
1806 invarg("invalid \"scope\"\n", *argv);
1807 scope = RT_SCOPE_NOWHERE;
1808 filter.scopemask = 0;
1809 }
1810 filter.scope = scope;
1811 } else if (matches(*argv, "type") == 0) {
1812 int type;
56f5daac 1813
aba5acdf 1814 NEXT_ARG();
aba5acdf
SH		 1815 if (rtnl_rtntype_a2n(&type, *argv))
1816 invarg("node type value is invalid\n", *argv);
d84b1878 1817 filter.typemask = (1<<type);
aba5acdf
SH		 1818 } else if (strcmp(*argv, "dev") == 0 ||
1819 strcmp(*argv, "oif") == 0) {
1820 NEXT_ARG();
1821 od = *argv;
1822 } else if (strcmp(*argv, "iif") == 0) {
1823 NEXT_ARG();
1824 id = *argv;
b0373bfb
ED		 1825 } else if (strcmp(*argv, "mark") == 0) {
1826 NEXT_ARG();
7c66d898
PS		 1827 if (get_unsigned(&mark, *argv, 0))
1828 invarg("invalid mark value", *argv);
b0373bfb 1829 filter.markmask = -1;
ed7fdc95 1830 } else if (matches(*argv, "metric") == 0 ||
80d1c528
SH		 1831 matches(*argv, "priority") == 0 ||
1832 strcmp(*argv, "preference") == 0) {
ed7fdc95
AZ		 1833 __u32 metric;
1834
1835 NEXT_ARG();
1836 if (get_u32(&metric, *argv, 0))
1837 invarg("\"metric\" value is invalid\n", *argv);
1838 filter.metric = metric;
1839 filter.metricmask = -1;
aba5acdf 1840 } else if (strcmp(*argv, "via") == 0) {
93ae2835 1841 int family;
56f5daac 1842
aba5acdf 1843 NEXT_ARG();
93ae2835
EB		 1844 family = read_family(*argv);
1845 if (family == AF_UNSPEC)
8d4f35de 1846 family = dump_family;
93ae2835
EB		 1847 else
1848 NEXT_ARG();
1849 get_prefix(&filter.rvia, *argv, family);
aba5acdf
SH		 1850 } else if (strcmp(*argv, "src") == 0) {
1851 NEXT_ARG();
8d4f35de 1852 get_prefix(&filter.rprefsrc, *argv, dump_family);
aba5acdf
SH		 1853 } else if (matches(*argv, "realms") == 0) {
1854 __u32 realm;
56f5daac 1855
aba5acdf 1856 NEXT_ARG();
d583e88e 1857 if (get_rt_realms_or_raw(&realm, *argv))
aba5acdf
SH		 1858 invarg("invalid realms\n", *argv);
1859 filter.realm = realm;
1860 filter.realmmask = ~0U;
1861 if ((filter.realm&0xFFFF) == 0 &&
1862 (*argv)[strlen(*argv) - 1] == '/')
1863 filter.realmmask &= ~0xFFFF;
1864 if ((filter.realm&0xFFFF0000U) == 0 &&
1865 (strchr(*argv, '/') == NULL ||
1866 (*argv)[0] == '/'))
1867 filter.realmmask &= ~0xFFFF0000U;
1868 } else if (matches(*argv, "from") == 0) {
1869 NEXT_ARG();
1870 if (matches(*argv, "root") == 0) {
1871 NEXT_ARG();
8d4f35de 1872 get_prefix(&filter.rsrc, *argv, dump_family);
aba5acdf
SH		 1873 } else if (matches(*argv, "match") == 0) {
1874 NEXT_ARG();
8d4f35de 1875 get_prefix(&filter.msrc, *argv, dump_family);
aba5acdf
SH		 1876 } else {
1877 if (matches(*argv, "exact") == 0) {
1878 NEXT_ARG();
1879 }
8d4f35de 1880 get_prefix(&filter.msrc, *argv, dump_family);
aba5acdf
SH		 1881 filter.rsrc = filter.msrc;
1882 }
1883 } else {
1884 if (matches(*argv, "to") == 0) {
1885 NEXT_ARG();
1886 }
1887 if (matches(*argv, "root") == 0) {
1888 NEXT_ARG();
8d4f35de 1889 get_prefix(&filter.rdst, *argv, dump_family);
aba5acdf
SH		 1890 } else if (matches(*argv, "match") == 0) {
1891 NEXT_ARG();
8d4f35de 1892 get_prefix(&filter.mdst, *argv, dump_family);
aba5acdf
SH		 1893 } else {
1894 if (matches(*argv, "exact") == 0) {
1895 NEXT_ARG();
1896 }
8d4f35de 1897 get_prefix(&filter.mdst, *argv, dump_family);
aba5acdf
SH		 1898 filter.rdst = filter.mdst;
1899 }
1900 }
1901 argc--; argv++;
1902 }
1903
8d4f35de
DA		 1904 if (dump_family == AF_UNSPEC && filter.tb)
1905 dump_family = AF_INET;
aba5acdf 1906
aba5acdf
SH		 1907 if (id || od) {
1908 int idx;
1909
1910 if (id) {
cc560825 1911 idx = ll_name_to_index(id);
fe99adbc
SP		 1912 if (!idx)
1913 return nodev(id);
aba5acdf
SH		 1914 filter.iif = idx;
1915 filter.iifmask = -1;
1916 }
1917 if (od) {
cc560825 1918 idx = ll_name_to_index(od);
fe99adbc
SP		 1919 if (!idx)
1920 return nodev(od);
aba5acdf
SH		 1921 filter.oif = idx;
1922 filter.oifmask = -1;
1923 }
1924 }
b0373bfb 1925 filter.mark = mark;
aba5acdf 1926
432e5f97 1927 if (action == IPROUTE_FLUSH)
8d4f35de 1928 return iproute_flush(dump_family, filter_fn);
aba5acdf 1929
8d4f35de 1930 if (rtnl_routedump_req(&rth, dump_family, iproute_dump_filter) < 0) {
43fd93ae
DA		 1931 perror("Cannot send dump request");
1932 return -2;
aba5acdf
SH		 1933 }
1934
663c3cb2
SH		 1935 new_json_obj(json);
1936
cd70f3f5 1937 if (rtnl_dump_filter(&rth, filter_fn, stdout) < 0) {
aba5acdf 1938 fprintf(stderr, "Dump terminated\n");
2f406f2d 1939 return -2;
aba5acdf
SH		 1940 }
1941
663c3cb2
SH		 1942 delete_json_obj();
1943 fflush(stdout);
2f406f2d 1944 return 0;
aba5acdf
SH		 1945}
1946
1947
d1f28cf1 1948static int iproute_get(int argc, char **argv)
aba5acdf 1949{
aba5acdf 1950 struct {
4806867a
SH		 1951 struct nlmsghdr n;
1952 struct rtmsg r;
56f5daac 1953 char buf[1024];
d17b136f
PS		 1954 } req = {
1955 .n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg)),
1956 .n.nlmsg_flags = NLM_F_REQUEST,
1957 .n.nlmsg_type = RTM_GETROUTE,
1958 .r.rtm_family = preferred_family,
1959 };
aba5acdf
SH		 1960 char *idev = NULL;
1961 char *odev = NULL;
86bf43c7 1962 struct nlmsghdr *answer;
aba5acdf 1963 int connected = 0;
aa883d86 1964 int fib_match = 0;
aba5acdf 1965 int from_ok = 0;
b0373bfb 1966 unsigned int mark = 0;
c2f9dc14 1967 bool address_found = false;
aba5acdf 1968
093b7646 1969 iproute_reset_filter(0);
c73f3e02 1970 filter.cloned = 2;
aba5acdf 1971
aba5acdf
SH		 1972 while (argc > 0) {
1973 if (strcmp(*argv, "tos") == 0 ||
1974 matches(*argv, "dsfield") == 0) {
1975 __u32 tos;
56f5daac 1976
aba5acdf
SH		 1977 NEXT_ARG();
1978 if (rtnl_dsfield_a2n(&tos, *argv))
1979 invarg("TOS value is invalid\n", *argv);
1980 req.r.rtm_tos = tos;
1981 } else if (matches(*argv, "from") == 0) {
1982 inet_prefix addr;
56f5daac 1983
aba5acdf
SH		 1984 NEXT_ARG();
1985 if (matches(*argv, "help") == 0)
1986 usage();
1987 from_ok = 1;
1988 get_prefix(&addr, *argv, req.r.rtm_family);
1989 if (req.r.rtm_family == AF_UNSPEC)
1990 req.r.rtm_family = addr.family;
1991 if (addr.bytelen)
21fef525
SH		 1992 addattr_l(&req.n, sizeof(req), RTA_SRC,
1993 &addr.data, addr.bytelen);
aba5acdf
SH		 1994 req.r.rtm_src_len = addr.bitlen;
1995 } else if (matches(*argv, "iif") == 0) {
1996 NEXT_ARG();
1997 idev = *argv;
b0373bfb
ED		 1998 } else if (matches(*argv, "mark") == 0) {
1999 NEXT_ARG();
7c66d898
PS		 2000 if (get_unsigned(&mark, *argv, 0))
2001 invarg("invalid mark value", *argv);
aba5acdf
SH		 2002 } else if (matches(*argv, "oif") == 0 ||
2003 strcmp(*argv, "dev") == 0) {
2004 NEXT_ARG();
2005 odev = *argv;
2006 } else if (matches(*argv, "notify") == 0) {
2007 req.r.rtm_flags |= RTM_F_NOTIFY;
2008 } else if (matches(*argv, "connected") == 0) {
2009 connected = 1;
0130f012
DA		 2010 } else if (matches(*argv, "vrf") == 0) {
2011 NEXT_ARG();
2012 if (!name_is_vrf(*argv))
2013 invarg("Invalid VRF\n", *argv);
2014 odev = *argv;
82252cdc
LC		 2015 } else if (matches(*argv, "uid") == 0) {
2016 uid_t uid;
2017
2018 NEXT_ARG();
2019 if (get_unsigned(&uid, *argv, 0))
2020 invarg("invalid UID\n", *argv);
2021 addattr32(&req.n, sizeof(req), RTA_UID, uid);
aa883d86
RP		 2022 } else if (matches(*argv, "fibmatch") == 0) {
2023 fib_match = 1;
2e86ed54
RP		 2024 } else if (strcmp(*argv, "as") == 0) {
2025 inet_prefix addr;
2026
2027 NEXT_ARG();
2028 if (strcmp(*argv, "to") == 0)
2029 NEXT_ARG();
2030 get_addr(&addr, *argv, req.r.rtm_family);
2031 if (req.r.rtm_family == AF_UNSPEC)
2032 req.r.rtm_family = addr.family;
21fef525
SH		 2033 addattr_l(&req.n, sizeof(req), RTA_NEWDST,
2034 &addr.data, addr.bytelen);
804c7fff
RP		 2035 } else if (matches(*argv, "sport") == 0) {
2036 __be16 sport;
2037
2038 NEXT_ARG();
2039 if (get_be16(&sport, *argv, 0))
2040 invarg("invalid sport\n", *argv);
2041 addattr16(&req.n, sizeof(req), RTA_SPORT, sport);
2042 } else if (matches(*argv, "dport") == 0) {
2043 __be16 dport;
2044
2045 NEXT_ARG();
2046 if (get_be16(&dport, *argv, 0))
2047 invarg("invalid dport\n", *argv);
2048 addattr16(&req.n, sizeof(req), RTA_DPORT, dport);
2049 } else if (matches(*argv, "ipproto") == 0) {
2050 int ipproto;
2051
2052 NEXT_ARG();
2053 ipproto = inet_proto_a2n(*argv);
2054 if (ipproto < 0)
2055 invarg("Invalid \"ipproto\" value\n",
2056 *argv);
2057 addattr8(&req.n, sizeof(req), RTA_IP_PROTO, ipproto);
aba5acdf
SH		 2058 } else {
2059 inet_prefix addr;
56f5daac 2060
aba5acdf
SH		 2061 if (strcmp(*argv, "to") == 0) {
2062 NEXT_ARG();
2063 }
2064 if (matches(*argv, "help") == 0)
2065 usage();
2066 get_prefix(&addr, *argv, req.r.rtm_family);
2067 if (req.r.rtm_family == AF_UNSPEC)
2068 req.r.rtm_family = addr.family;
2069 if (addr.bytelen)
21fef525
SH		 2070 addattr_l(&req.n, sizeof(req),
2071 RTA_DST, &addr.data, addr.bytelen);
aba5acdf 2072 req.r.rtm_dst_len = addr.bitlen;
c2f9dc14 2073 address_found = true;
aba5acdf
SH		 2074 }
2075 argc--; argv++;
2076 }
2077
c2f9dc14 2078 if (!address_found) {
14645ec2 2079 fprintf(stderr, "need at least a destination address\n");
2f406f2d 2080 return -1;
aba5acdf
SH		 2081 }
2082
aba5acdf
SH		 2083 if (idev || odev) {
2084 int idx;
2085
2086 if (idev) {
cc560825 2087 idx = ll_name_to_index(idev);
fe99adbc
SP		 2088 if (!idx)
2089 return nodev(idev);
aba5acdf
SH		 2090 addattr32(&req.n, sizeof(req), RTA_IIF, idx);
2091 }
2092 if (odev) {
cc560825 2093 idx = ll_name_to_index(odev);
fe99adbc
SP		 2094 if (!idx)
2095 return nodev(odev);
aba5acdf
SH		 2096 addattr32(&req.n, sizeof(req), RTA_OIF, idx);
2097 }
2098 }
b0373bfb
ED		 2099 if (mark)
2100 addattr32(&req.n, sizeof(req), RTA_MARK, mark);
aba5acdf
SH		 2101
2102 if (req.r.rtm_family == AF_UNSPEC)
2103 req.r.rtm_family = AF_INET;
2104
8513f4a9
JK		 2105 /* Only IPv4 supports the RTM_F_LOOKUP_TABLE flag */
2106 if (req.r.rtm_family == AF_INET)
2107 req.r.rtm_flags |= RTM_F_LOOKUP_TABLE;
aa883d86
RP		 2108 if (fib_match)
2109 req.r.rtm_flags |= RTM_F_FIB_MATCH;
bc234301 2110
86bf43c7 2111 if (rtnl_talk(&rth, &req.n, &answer) < 0)
8b21cef1 2112 return -2;
aba5acdf 2113
a0a639d9
MC		 2114 new_json_obj(json);
2115
aba5acdf 2116 if (connected && !from_ok) {
86bf43c7
HL		 2117 struct rtmsg *r = NLMSG_DATA(answer);
2118 int len = answer->nlmsg_len;
56f5daac 2119 struct rtattr *tb[RTA_MAX+1];
aba5acdf 2120
cd554f2c 2121 if (print_route(answer, (void *)stdout) < 0) {
aba5acdf 2122 fprintf(stderr, "An error :-)\n");
86bf43c7 2123 free(answer);
8be29558 2124 return -1;
aba5acdf
SH		 2125 }
2126
86bf43c7 2127 if (answer->nlmsg_type != RTM_NEWROUTE) {
aba5acdf 2128 fprintf(stderr, "Not a route?\n");
86bf43c7 2129 free(answer);
aba5acdf
SH		 2130 return -1;
2131 }
2132 len -= NLMSG_LENGTH(sizeof(*r));
2133 if (len < 0) {
2134 fprintf(stderr, "Wrong len %d\n", len);
86bf43c7 2135 free(answer);
aba5acdf
SH		 2136 return -1;
2137 }
2138
aba5acdf
SH		 2139 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
2140
2141 if (tb[RTA_PREFSRC]) {
2142 tb[RTA_PREFSRC]->rta_type = RTA_SRC;
2143 r->rtm_src_len = 8*RTA_PAYLOAD(tb[RTA_PREFSRC]);
2144 } else if (!tb[RTA_SRC]) {
2145 fprintf(stderr, "Failed to connect the route\n");
86bf43c7 2146 free(answer);
aba5acdf
SH		 2147 return -1;
2148 }
2149 if (!odev && tb[RTA_OIF])
2150 tb[RTA_OIF]->rta_type = 0;
2151 if (tb[RTA_GATEWAY])
2152 tb[RTA_GATEWAY]->rta_type = 0;
93ae2835
EB		 2153 if (tb[RTA_VIA])
2154 tb[RTA_VIA]->rta_type = 0;
aba5acdf
SH		 2155 if (!idev && tb[RTA_IIF])
2156 tb[RTA_IIF]->rta_type = 0;
2157 req.n.nlmsg_flags = NLM_F_REQUEST;
2158 req.n.nlmsg_type = RTM_GETROUTE;
2159
a0a639d9 2160 delete_json_obj();
86bf43c7
HL		 2161 free(answer);
2162 if (rtnl_talk(&rth, &req.n, &answer) < 0)
56d8ff0a 2163 return -2;
aba5acdf
SH		 2164 }
2165
cd554f2c 2166 if (print_route(answer, (void *)stdout) < 0) {
aba5acdf 2167 fprintf(stderr, "An error :-)\n");
86bf43c7 2168 free(answer);
56d8ff0a 2169 return -1;
aba5acdf
SH		 2170 }
2171
a0a639d9 2172 delete_json_obj();
86bf43c7 2173 free(answer);
56d8ff0a 2174 return 0;
aba5acdf
SH		 2175}
2176
79f4a393 2177static int rtattr_cmp(const struct rtattr *rta1, const struct rtattr *rta2)
74af8dd9
XL		 2178{
2179 if (!rta1 || !rta2 || rta1->rta_len != rta2->rta_len)
2180 return 1;
2181
2182 return memcmp(RTA_DATA(rta1), RTA_DATA(rta2), RTA_PAYLOAD(rta1));
2183}
2184
cd554f2c 2185static int restore_handler(struct rtnl_ctrl_data *ctrl,
0628cddd 2186 struct nlmsghdr *n, void *arg)
f4ff11e3 2187{
74af8dd9
XL		 2188 struct rtmsg *r = NLMSG_DATA(n);
2189 struct rtattr *tb[RTA_MAX+1];
2190 int len = n->nlmsg_len - NLMSG_LENGTH(sizeof(*r));
2191 int ret, prio = *(int *)arg;
2192
2193 parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
f4ff11e3 2194
74af8dd9
XL		 2195 /* Restore routes in correct order:
2196 * 0. ones for local addresses,
2197 * 1. ones for local networks,
2198 * 2. others (remote networks/hosts).
2199 */
2200 if (!prio && !tb[RTA_GATEWAY] && (!tb[RTA_PREFSRC] ||
2201 !rtattr_cmp(tb[RTA_PREFSRC], tb[RTA_DST])))
2202 goto restore;
c85703bb 2203 else if (prio == 1 && !tb[RTA_GATEWAY] && tb[RTA_PREFSRC] &&
74af8dd9
XL		 2204 rtattr_cmp(tb[RTA_PREFSRC], tb[RTA_DST]))
2205 goto restore;
2206 else if (prio == 2 && tb[RTA_GATEWAY])
2207 goto restore;
2208
2209 return 0;
2210
2211restore:
f4ff11e3
DS		 2212 n->nlmsg_flags |= NLM_F_REQUEST | NLM_F_CREATE | NLM_F_ACK;
2213
2214 ll_init_map(&rth);
2215
86bf43c7 2216 ret = rtnl_talk(&rth, n, NULL);
f4ff11e3
DS		 2217 if ((ret < 0) && (errno == EEXIST))
2218 ret = 0;
2219
2220 return ret;
2221}
2222
76c61b34
PE		 2223static int route_dump_check_magic(void)
2224{
2225 int ret;
2226 __u32 magic = 0;
2227
2228 if (isatty(STDIN_FILENO)) {
2229 fprintf(stderr, "Can't restore route dump from a terminal\n");
2230 return -1;
2231 }
2232
2233 ret = fread(&magic, sizeof(magic), 1, stdin);
2234 if (magic != route_dump_magic) {
2235 fprintf(stderr, "Magic mismatch (%d elems, %x magic)\n", ret, magic);
2236 return -1;
2237 }
2238
2239 return 0;
2240}
2241
d1f28cf1 2242static int iproute_restore(void)
f4ff11e3 2243{
74af8dd9
XL		 2244 int pos, prio;
2245
76c61b34 2246 if (route_dump_check_magic())
2f406f2d 2247 return -1;
76c61b34 2248
74af8dd9 2249 pos = ftell(stdin);
bffb68b6
HL		 2250 if (pos == -1) {
2251 perror("Failed to restore: ftell");
2f406f2d 2252 return -1;
bffb68b6
HL		 2253 }
2254
74af8dd9
XL		 2255 for (prio = 0; prio < 3; prio++) {
2256 int err;
2257
2258 err = rtnl_from_file(stdin, &restore_handler, &prio);
2259 if (err)
2f406f2d 2260 return -2;
74af8dd9 2261
bffb68b6
HL		 2262 if (fseek(stdin, pos, SEEK_SET) == -1) {
2263 perror("Failed to restore: fseek");
2f406f2d 2264 return -1;
bffb68b6 2265 }
74af8dd9
XL		 2266 }
2267
2f406f2d 2268 return 0;
f4ff11e3
DS		 2269}
2270
cd554f2c 2271static int show_handler(struct rtnl_ctrl_data *ctrl,
0628cddd 2272 struct nlmsghdr *n, void *arg)
93b79863 2273{
cd554f2c 2274 print_route(n, stdout);
93b79863
PE		 2275 return 0;
2276}
2277
2278static int iproute_showdump(void)
2279{
2280 if (route_dump_check_magic())
2f406f2d 2281 return -1;
93b79863 2282
2f406f2d
ÉB		 2283 if (rtnl_from_file(stdin, &show_handler, NULL))
2284 return -2;
2285
2286 return 0;
93b79863
PE		 2287}
2288
093b7646 2289void iproute_reset_filter(int ifindex)
aba5acdf
SH		 2290{
2291 memset(&filter, 0, sizeof(filter));
2292 filter.mdst.bitlen = -1;
2293 filter.msrc.bitlen = -1;
093b7646 2294 filter.oif = ifindex;
2295 if (filter.oif > 0)
2296 filter.oifmask = -1;
aba5acdf
SH		 2297}
2298
2299int do_iproute(int argc, char **argv)
2300{
2301 if (argc < 1)
f4ff11e3 2302 return iproute_list_flush_or_save(0, NULL, IPROUTE_LIST);
ae665a52 2303
aba5acdf
SH		 2304 if (matches(*argv, "add") == 0)
2305 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_EXCL,
2306 argc-1, argv+1);
2307 if (matches(*argv, "change") == 0 || strcmp(*argv, "chg") == 0)
2308 return iproute_modify(RTM_NEWROUTE, NLM_F_REPLACE,
2309 argc-1, argv+1);
2310 if (matches(*argv, "replace") == 0)
2311 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_REPLACE,
2312 argc-1, argv+1);
2313 if (matches(*argv, "prepend") == 0)
2314 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE,
2315 argc-1, argv+1);
2316 if (matches(*argv, "append") == 0)
2317 return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_APPEND,
2318 argc-1, argv+1);
2319 if (matches(*argv, "test") == 0)
2320 return iproute_modify(RTM_NEWROUTE, NLM_F_EXCL,
2321 argc-1, argv+1);
2322 if (matches(*argv, "delete") == 0)
2323 return iproute_modify(RTM_DELROUTE, 0,
2324 argc-1, argv+1);
2325 if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
2326 || matches(*argv, "lst") == 0)
f4ff11e3 2327 return iproute_list_flush_or_save(argc-1, argv+1, IPROUTE_LIST);
aba5acdf
SH		 2328 if (matches(*argv, "get") == 0)
2329 return iproute_get(argc-1, argv+1);
2330 if (matches(*argv, "flush") == 0)
f4ff11e3
DS		 2331 return iproute_list_flush_or_save(argc-1, argv+1, IPROUTE_FLUSH);
2332 if (matches(*argv, "save") == 0)
2333 return iproute_list_flush_or_save(argc-1, argv+1, IPROUTE_SAVE);
2334 if (matches(*argv, "restore") == 0)
2335 return iproute_restore();
93b79863
PE		 2336 if (matches(*argv, "showdump") == 0)
2337 return iproute_showdump();
aba5acdf
SH		 2338 if (matches(*argv, "help") == 0)
2339 usage();
80d1c528
SH		 2340
2341 fprintf(stderr,
2342 "Command \"%s\" is unknown, try \"ip route help\".\n", *argv);
aba5acdf
SH		 2343 exit(-1);
2344}
Upstream mirror of iproute2